Uplink transmission method and apparatus

ABSTRACT

The present invention provides an uplink transmission method and apparatus, for use in improving the flexibility of uplink scheduling. The method comprises: a base station instructs a UE to send SRSs corresponding to N groups of SRS resources, each of the N groups of SRS resources comprising one or more SRS resources; N being a positive integer; the base station receives the SRSs sent by the UE to determine X groups of uplink scheduling information, each of the X groups of uplink scheduling information corresponding to one group of SRS resources in the N groups of SRS resources; uplink scheduling information in different groups corresponding to SRS resources in different groups; X being a positive integer greater than one and not greater than N; the base station sends the determined X groups of uplink scheduling information to the UE so that the UE transmits an uplink signal according to the X groups of uplink scheduling information.

The present application is a national phase entry under 35 U.S.C. § 371of International Application No. PCT/CN2019/101229, filed on Aug. 17,2019, which claims the priority from Chinese Patent Application No.201810942890.6, filed on Aug. 17, 2018, in the China NationalIntellectual Property Administration and entitled “Uplink TransmissionMethod and Apparatus”, which is hereby incorporated by reference in itsentirety.

FIELD

The present disclosure relates to the field of mobile communicationtechnology, and in particular to an uplink transmission method andapparatus.

BACKGROUND

In the prior art, for a Physical Uplink Shared Channel (PUSCH)transmission, a base station may send a group of uplink schedulinginformation for a User Equipment (UE), where the group of uplinkscheduling information may include the Transmit Precoding MetrixIndicator (TPMI) and transmit layer indicator (e.g., Transmit RankIndicator (TRI) indicating the number of transmit streams), uplinkSounding Reference Signal (SRS) indicator, etc., and the TPMI, transmitlayer indicator, and SRS resource indicator, etc. in the group of uplinkscheduling information are used only to indicate the informationcorresponding to one SRS resource set corresponding to the PUSCH, whereone SRS resource set is a group of SRS resources and may include one ormore SRS resources. This approach limits the flexibility of uplinkscheduling.

For example, the UE may have a plurality of antenna panels for uplinktransmission at present. Each antenna panel is composed of a group ofantenna devices, and may include one or more antenna devices. The UE cansend one data layer from one antenna panel at a time, and the UE canalso send one data layer from a plurality of antenna panels at the sametime. In the prior art, the UE can use a plurality of antenna panels toperform the data transmission simultaneously during uplink transmission,but the base station cannot indicate the uplink scheduling information(such as precoding matrix, sending amplitude, etc.) independently foreach antenna panel of the UE, which limits the performance of the uplinktransmission of the UE.

SUMMARY

The embodiments of the present disclosure provide an uplink transmissionmethod and apparatus, to solve the problem of poor flexibility of theuplink scheduling in the prior art.

In a first aspect, an embodiment of the present disclosure provides anuplink transmission method, including:

instructing, by a base station, a User Equipment (UE) to send SoundingReference Signals (SRSs) corresponding to N groups of SRS resources,where each group of SRS resources comprises one or more SRS resources,and N is a positive integer greater than 1;

receiving, by the base station, the SRSs sent by the UE;

determining, by the base station, X groups of uplink schedulinginformation; where each group of uplink scheduling informationcorresponds to one of the N groups of SRS resources, different groups ofuplink scheduling information correspond to different groups of SRSresources in the N groups of SRS resources, and X is a positive integergreater than land less than N, or X is a positive integer greater than 1and equal to N; and

sending, by the base station, the X groups of uplink schedulinginformation to the UE for the UE performing uplink signal transmissionaccording to the X groups of uplink scheduling information.

In this embodiment, the base station instructs the UE to send the SRSscorresponding to N groups of SRS resources, then determines X groups ofuplink scheduling information based on the received SRSs sent by the UE,and sends the determined X groups of uplink scheduling information tothe UE, where each group of uplink scheduling information corresponds toone group of SRS resources, and different groups of uplink schedulinginformation correspond to different groups of SRS resources, so that theUE can perform, according to each group of uplink schedulinginformation, the uplink signal transmission by using the uplinktransmission characteristics when sending the SRS corresponding to thisgroup of uplink scheduling information after receiving the X groups ofuplink scheduling information, improving the flexibility of uplinkscheduling.

In one embodiment, one of the X groups of uplink scheduling informationcorresponds to one antenna panel of the UE.

In this embodiment, one group of uplink scheduling informationcorresponds to one antenna panel of the UE, and the effect that the basestation indicates the uplink scheduling information independently foreach antenna panel of the UE is implemented by indicating the uplinkscheduling information separately to each group of SRS resources,increasing the flexibility of uplink scheduling and improving theperformance of uplink transmission of the UE.

In one embodiment, the SRSs are sent by the UE using a plurality ofantenna panels, where the SRSs are sent by the UE, using differentgroups of antenna panels, on different groups of SRS resources.

In this embodiment, the UE uses different antenna panels to send theSRSs on different groups of SRS resources, while the base stationdetermines the uplink scheduling information corresponding to each groupof SRS resources respectively according to the received SRS on thisgroup of SRS resources, where the determined different groups of uplinkscheduling information correspond to different groups of SRS resources,and then the effect of indicating the uplink scheduling informationindependently for the antenna panel corresponding to each group of SRSresources is implemented by indicating the uplink scheduling informationseparately to each group of SRS resources, increasing the flexibility ofuplink scheduling and improving the performance of uplink transmissionof the UE.

In one embodiment, after the base station instructs the UE to send theSRSs corresponding to the N groups of SRS resources, the method furtherincludes:

sending, by the base station, correspondence information between the Xgroups of uplink scheduling information and the N groups of SRSresources to the UE.

In this embodiment, the base station sends the correspondenceinformation between the X groups of uplink scheduling information andthe N groups of SRS resources to the UE, so that the UE can transmituplink signals based on the correspondence, increasing the flexibilityof uplink scheduling and improving the performance of uplinktransmission of the UE.

In one embodiment, the X groups of uplink scheduling information arecontained in the DCI or RRC signaling.

This embodiment saves the signaling overhead of the communication systemand improves the user experience.

In one embodiment, a signaling carrying the uplink schedulinginformation does not contain an SRS Resource Indicator (SRI) indicatingan SRS resource corresponding to uplink scheduling information.

This embodiment increases the flexibility of uplink scheduling andimproves the user experience.

In one embodiment, at least one of the X groups of uplink schedulinginformation contains indication information indicating that the at leastone group of uplink scheduling information is not used for the uplinksignal transmission.

This embodiment increases the flexibility of uplink scheduling andimproves the user experience.

In one embodiment, before the base station determines the X groups ofuplink scheduling information, the method further includes:

agreeing on, by the base station, the value of X with the UE.

This embodiment increases the flexibility and reliability of uplinkscheduling and improves the user experience.

In one embodiment, after the base station receives the SRSs sent by theUE, the method further includes:

sending, by the base station, SRS resource set indication information tothe UE, where the SRS resource set indication information indicates SRSresource sets corresponding to the X groups of uplink schedulinginformation.

In this embodiment, the base station indicates the resource set foruplink transmission to the UE by sending the SRS resource set indicationinformation to the UE, increasing the flexibility and reliability ofuplink scheduling and improving the user experience.

In one embodiment, the X groups of uplink scheduling information includeone or more relative relationships among some of the X groups of uplinkscheduling information, or include one or more relative relationshipsamong all of the X groups of uplink scheduling information; where arelative relationship comprises phase rotation and/or amplitude scaling.

In this embodiment, the base station can indicate the relativerelationship (such as phase rotation and/or amplitude scaling, etc.)among some or all of the X groups of uplink scheduling information tothe UE, further increasing the flexibility of uplink scheduling andimproving the performance of uplink transmission of the UE.

In one embodiment, the correspondence between the X groups of uplinkscheduling information and the N SRS resources is a correspondencepre-agreed by the base station and the UE.

In this embodiment, the base station pre-agrees the correspondencebetween the X groups of uplink scheduling information and the N SRSresources, then indicates the uplink scheduling information separatelyto each group of SRS resources based on this correspondence, and thenindicates the uplink scheduling information independently for each groupof SRS resources of the UE, increasing the flexibility of uplinkscheduling and improving the performance of uplink transmission of theUE.

In one embodiment, each group of uplink scheduling information includesa TPMI and/or a transmit layer indicator of an SRS resourcecorresponding to the each group of uplink scheduling information.

In this embodiment, the base station can indicate the TPMI and/or thenumber of transmission streams independently for each group of SRSresources of the UE, which is well applicable to the codebook-baseduplink transmission mode, improves the flexibility of uplink schedulingand improves the performance of uplink transmission of the UE.

In one embodiment, different groups of uplink scheduling informationindicate the same number of transmission streams.

In this embodiment, the base station can indicate the same number oftransmission streams for each SRS resource group in the codebook-baseduplink transmission mode, which enriches the implementations of uplinkscheduling and improves the user experience.

In one embodiment, after the base station receives the SRSs sent by theUE, the method further includes:

sending, by the base station, SRS resource indication information to theUE, where the SRS resource indication information indicates one or moreSRS resources corresponding to each group of uplink schedulinginformation.

In this embodiment, the base station can send the SRS resourceindication information to the UE in the codebook-based uplinktransmission mode, to indicate the corresponding SRS resourcesseparately for each SRS resource group, which enriches theimplementations of uplink scheduling and improves the user experience.

In one embodiment, each group of SRS resources sent by the UE includesone SRS resource, and different groups of uplink scheduling informationcorrespond to different SRS resources;

after the base station receives the SRSs sent by the UE, the methodfurther includes:

determining, by the base station, the number of transmission streams ofthe uplink signal according to the SRSs sent by the UE; where the numberof transmission streams corresponds to all SRS resources correspondingto the X groups of uplink scheduling information;

indicating, by the base station, the number of transmission streams tothe UE.

In this embodiment, the base station can indicate the same number oftransmission streams of the uplink signal for each group of SRSresources according to the SRSs sent by the UE in the codebook-baseduplink transmission mode, which enriches the implementations of uplinkscheduling and improves the user experience.

In one embodiment, sending, by the base station, the X groups of uplinkscheduling information to the UE, includes:

determining, by the base station, a bit width of the X groups of uplinkscheduling information in Downlink Control Information (DCI), accordingto a quantity of antenna ports contained in SRS resources correspondingto the X groups of uplink scheduling information,

generating, by the base station, the DCI, and

sending, by the base station, the X groups of uplink schedulinginformation to the UE through the DCI.

In this embodiment, the base station can determine the bit width of theX groups of uplink scheduling information in the DCI in thecodebook-based uplink transmission mode, encode the X groups of uplinkscheduling information in the DCI based on the bit width, and then sendthe X groups of uplink scheduling information to the UE through the DCI,to indicate the uplink scheduling information independently for eachgroup of SRS resources of the UE, increase the flexibility of uplinkscheduling and improve the performance of uplink transmission of the UE.

In one embodiment, determining, by the base station, the bit width ofthe X groups of uplink scheduling information in the DCI, according tothe quantity of antenna ports contained in the SRS resourcescorresponding to the X groups of uplink scheduling information,includes:

determining, by the base station, a bit width of a k^(th) one of the Xgroups of uplink scheduling information in the DCI, according to aquantity of antenna ports of SRS resources in the group of SRS resourcescorresponding to the k^(th) group of uplink scheduling information, andk is an integer greater than or equal to 1 and less than or equal to X.

In this embodiment, the base station can determine the bit width of theX groups of uplink scheduling information in the DCI according to thenumber of antenna ports contained in the SRS resources corresponding tothe X groups of uplink scheduling information in the codebook-baseduplink transmission mode, and then indicate the uplink schedulinginformation independently for each antenna panel of the UE through theDCI, increasing the flexibility of uplink scheduling and improving theperformance of uplink transmission of the UE.

In one embodiment, each group of SRSs sent by the UE corresponds to oneSRS resource, and different groups of uplink scheduling informationcorrespond to different SRS resources; the scheduling information ofeach of X SRS resources corresponding to the X groups of uplinkscheduling information is independently encoded in the DCI; and thescheduling information of each of the X SRS resources includes the TPMIand/or transmit layer indicator of each SRS resource;

determining, by the base station, a bit width of the X groups of uplinkscheduling information in DCI according to the number of antenna portscontained in SRS resources corresponding to the X groups of uplinkscheduling information, includes:

determining, by the base station, the bit width of the TPMI and/ortransmit layer indicator corresponding to each of the X SRS resourcesaccording to the number of antenna ports contained in the SRS resource;or

determining, by the base station, the bit width of the TPMI and/ortransmit layer indicator corresponding to each SRS resource according tothe maximum value of the numbers of antenna ports contained in all ofthe X SRS resources; or

determining, by the base station, the bit width of the TPMI and/ortransmit layer indicator corresponding to each of the numbers of antennaports according to the number of antenna ports contained in each of theX SRS resources, and taking the maximum value in all the determined bitwidths as the bit width of the TPMI and/or transmit layer indicatorcorresponding to each SRS resource.

This embodiment provides a variety of implementations of independentlyencoding each of the X groups of uplink scheduling information in theDCI based on the number of antenna ports contained in the SRS resourcescorresponding to the X groups of uplink scheduling information,increasing the flexibility of uplink scheduling and improving theperformance of uplink transmission of the UE.

In one embodiment, each group of SRSs sent by the UE corresponds to oneSRS resource, and different groups of uplink scheduling informationcorrespond to different SRS resources; the scheduling information of allof X SRS resources corresponding to the X groups of uplink schedulinginformation is jointly encoded in the DCI; and the schedulinginformation of each of the X SRS resources includes the TPMI and/ortransmit layer indicator of each SRS resource;

determining, by the base station, a bit width of the X groups of uplinkscheduling information in DCI according to the number of antenna portscontained in SRS resources corresponding to the X groups of uplinkscheduling information, includes:

determining, by the base station, the total bit width of the TPMIsand/or transmit layer indicator corresponding to all the SRS resourcesaccording to the sum of possible values of the TPMIs and/or the numbersof transmission streams under the numbers of antenna ports contained inall the SRS resources; or

determining, by the base station, the total bit width of the TPMIsand/or transmit layer indicator corresponding to all the SRS resourcesaccording to the maximum value among the possible values of the TPMIsand/or the numbers of transmission streams under the numbers of SRSantenna ports contained in all the SRS resources; or

determining, by the base station, the total bit width of the TPMIsand/or transmit layer indicators corresponding to all the SRS resourcesaccording to the possible values of the TPMIs and/or the numbers oftransmission streams under the maximum among the numbers of antennaports contained in all the SRS resources.

This embodiment provides a variety of implementations of jointlyencoding the X groups of uplink scheduling information in the DCI basedon the number of antenna ports contained in the SRS resourcescorresponding to the X groups of uplink scheduling information,increasing the flexibility of uplink scheduling and improving theperformance of uplink transmission of the UE.

In one embodiment, each group of SRSs sent by the UE corresponds to oneSRS resource, and different groups of uplink scheduling informationcorrespond to different SRS resources; the scheduling information ofeach of X SRS resources corresponding to the X groups of uplinkscheduling information is independently encoded in the DCI; thescheduling information of one of the X SRS resources includes the TPMIand transmission stream number indicator of the one SRS resource, andthe scheduling information of each of the remaining X-1 SRS resourcesincludes the TPMI of the SRS resource; and the transmit layer indicatorincluded in the scheduling information of the one SRS resource indicatesthe number of transmission streams of each of the X SRS resourcessimultaneously;

determining, by the base station, a bit width of the X groups of uplinkscheduling information in DCI according to the number of antenna portscontained in SRS resources corresponding to the X groups of uplinkscheduling information, includes:

determining, by the base station, the bit width of the TPMI and transmitlayer indicator of the one SRS resource according to the maximum amongthe numbers of antenna ports contained in all the SRS resources; anddetermining the bit width of the TPMI indication informationcorresponding to each of the remaining X-1 SRS resources according tothe number of antenna ports contained in the SRS resource; or

determining, by the base station, the bit width of the TPMI and transmitlayer indicator of the one SRS resource according to the number ofantenna ports contained in the one SRS resource; and determining the bitwidth of the TPMI indication information corresponding to each of theremaining X-1 SRS resources according to the number of antenna portscontained in the SRS resource; or

determining, by the base station, the bit width of the TPMI and transmitlayer indicator of the one SRS resource according to the maximum amongthe numbers of antenna ports contained in all the SRS resources; anddetermining the bit width of the TPMI indication informationcorresponding to each of the remaining X-1 SRS resources according tothe maximum among the numbers of antenna ports contained in all the SRSresources; or

determining, by the base station, the bit width of the TPMI and transmitlayer indicator of the one SRS resource according to the number ofantenna ports contained in the one SRS resource; and determining the bitwidth of the TPMI indication information corresponding to each of theremaining X-1 SRS resources according to the maximum among the numbersof antenna ports contained in all the SRS resources; or

determining, by the base station, the bit width of the TPMI and transmitlayer indicator of the one SRS resource according to the maximum amongthe numbers of antenna ports contained in all the SRS resources; anddetermining the bit widths of the TPMIs corresponding to the numbers ofantenna ports according to the number of antenna ports contained in eachof the X SRS resources, and taking the maximum value thereof as the bitwidth of the TPMI corresponding to each of the remaining X-1 SRSresources; or

determining, by the base station, the bit width of the TPMI and transmitlayer indicator of the one SRS resource according to the number ofantenna ports contained in the one SRS resource; and determining the bitwidths of the TPMIs corresponding to the numbers of antenna portsaccording to the number of antenna ports contained in each of the X SRSresources, and taking the maximum value thereof as the bit width of theTPMI corresponding to each of the remaining X-1 SRS resources; or

determining, by the base station, the bit widths of the TPMIs and thebit widths of the transmit layer indicators corresponding to the numbersof antenna ports according to the number of antenna ports contained ineach of the X SRS resources, taking the maximum among the bit widths ofthe transmission stream number indicators as the bit width of thetransmission stream number indicator of the one SRS resource, and takingthe maximum among the bit widths of the TPMI indication information asthe bit width of the TPMI corresponding to each of the X SRS resources;or

determining, by the base station, the bit widths of the TPMIscorresponding to the numbers of antenna ports as well as thejointly-encoded bit widths of the TPMIs and transmit layer indicatorscorresponding to the numbers of antenna ports according to the number ofantenna ports contained in each of the X SRS resources, taking themaximum among the jointly-encoded bit widths of the TPMIs and transmitlayer indicators as the bit width of the transmit layer indicator of theone SRS resource, and taking the maximum among the bit widths of theTPMI indication information as the bit width of the TPMI correspondingto each of the X SRS resources.

This embodiment provides a variety of implementations of independentlyencoding each of the X groups of uplink scheduling information in theDCI based on the number of antenna ports contained in the SRS resourcescorresponding to the X groups of uplink scheduling information,increasing the flexibility of uplink scheduling and improving theperformance of uplink transmission of the UE.

In one embodiment, each group of SRSs sent by the UE corresponds to oneSRS resource, and different groups of uplink scheduling informationcorrespond to different SRS resources; the scheduling information ofeach of X SRS resources corresponding to the X groups of uplinkscheduling information is independently encoded in the DCI; thescheduling information of one of the X SRS resources includes the TPMIand transmit layer indicator of the one SRS resource, and the schedulinginformation of each of the remaining X-1 SRS resources includes the TPMIof the SRS resource; and the transmit layer indicator included in thescheduling information of the one SRS resource indicates the number oftransmission streams of each of the X SRS resources simultaneously;

determining, by the base station, a bit width of the X groups of uplinkscheduling information in DCI according to the number of antenna portscontained in SRS resources corresponding to the X groups of uplinkscheduling information, includes:

determining, by the base station, the bit width of the TPMI and transmitlayer indicator of the one SRS resource according to the maximum amongthe numbers of antenna ports contained in all the SRS resources; and foreach of the remaining X-1 SRS resources, determining the bit width ofthe TPMI corresponding to the SRS resource according to the number oftransmission streams and the number of antenna ports contained in theSRS resource; or

determining, by the base station, the bit width of the TPMI and transmitlayer indicator of the one SRS resource according to the number ofantenna ports contained in the one SRS resource; and for each of theremaining X-1 SRS resources, determining the bit width of the TPMIcorresponding to the SRS resource according to the number oftransmission streams and the number of antenna ports contained in theSRS resource; or

determining, by the base station, the bit width of the TPMI and transmitlayer indicator of the one SRS resource according to the maximum amongthe numbers of antenna ports contained in all the SRS resources; and foreach of the remaining X-1 SRS resources, determining the bit widths ofthe TPMIs corresponding to other SRS resources according to the numberof transmission streams and the maximum among the numbers of antennaports contained in all the SRS resources; or

determining, by the base station, the bit width of the TPMI and transmitlayer indicator of the one SRS resource according to the number ofantenna ports contained in the one SRS resource; and for each of theremaining X-1 SRS resources, determining the bit widths of the TPMIscorresponding to other SRS resources according to the number oftransmission streams and the maximum among the numbers of antenna portscontained in all the SRS resources; or

determining, by the base station, the bit width of the TPMI and transmitlayer indicator of the one SRS resource according to the maximum amongthe numbers of antenna ports contained in all the SRS resources; and foreach of the remaining X-1 SRS resources, determining the bit widths ofthe TPMIs corresponding to the numbers of antenna ports according to thenumber of transmission streams and the number of antenna ports containedin each of the X SRS resources, and taking the maximum value thereof asthe bit width of the TPMI corresponding to the SRS resource; or

determining, by the base station, the bit width of the TPMI and transmitlayer indicator of the one SRS resource according to the number ofantenna ports contained in the one SRS resource; and for each of theremaining X-1 SRS resources, determining the bit widths of the TPMIscorresponding to the numbers of antenna ports according to the number oftransmission streams and the number of antenna ports contained in eachof the X SRS resources, and taking the maximum value thereof as the bitwidth of the TPMI corresponding to the SRS resource; or

determining, by the base station, the bit widths of the transmit layerindicators and the bit widths of the TPMIs during single-streamtransmission corresponding to the numbers of antenna ports according tothe number of antenna ports contained in each of the X SRS resources,taking the maximum among all the determined bit widths of the transmitlayer indicators as the bit width of the transmission stream number ofthe one SRS resource, and taking the maximum among all the determinedbit widths of the TPMIs as the bit width of the TPMI corresponding toeach of the remaining X-1 SRS resources; or

determining, by the base station, the bit widths of the TPMIs duringsingle-stream transmission corresponding to the numbers of antenna portsas well as the jointly-encoded bit widths of the TPMIs and transmitlayer indicators corresponding to the numbers of antenna ports accordingto the number of antenna ports contained in each of the X SRS resources,taking the maximum among all the determined jointly-encoded bit widthsof the TPMIs and transmit layer indicators as the bit width of thetransmit layer indicator of the one SRS resource, and taking the maximumamong the bit widths of the TPMIs during single-stream transmission asthe bit width of the TPMI corresponding to each of the remaining X-1 SRSresources.

This embodiment provides a variety of implementations of independentlyencoding each of the X groups of uplink scheduling information in theDCI based on the number of antenna ports contained in the SRS resourcescorresponding to the X groups of uplink scheduling information,increasing the flexibility of uplink scheduling and improving theperformance of uplink transmission of the UE.

In one embodiment, each group of SRSs sent by the UE corresponds to oneSRS resource, and different o groups of uplink scheduling informationcorrespond to different SRS resources; the scheduling information ofeach of X SRS resources corresponding to the X groups of uplinkscheduling information is jointly encoded in the DCI; the schedulinginformation of one of the X SRS resources includes the TPMI and transmitlayer indicator of the one SRS resource, and the scheduling informationof each of the remaining X-1 SRS resources includes the TPMI of the SRSresource; and the transmit layer indicator included in the schedulinginformation of the one SRS resource indicates the number of transmissionstreams of each of the X SRS resources simultaneously;

determining, by the base station, a bit width of the X groups of uplinkscheduling information in DCI according to the number of antenna portscontained in SRS resources corresponding to the X groups of uplinkscheduling information, includes:

determining, by the base station, the total bit width of the TPMIsand/or transmit layer indicators corresponding to all the SRS resourcesaccording to the sum of possible values of the TPMI and the number oftransmission streams under the number of SRS ports contained in one ofthe X SRS resources and possible values of the TPMIs under the numbersof SRS ports contained in the remaining X-1 SRS resources; or

determining, by the base station, the total bit width of the TPMIsand/or transmit layer indicators corresponding to all the SRS resourcesaccording to the maximum among possible values of the TPMI and thenumber of transmission streams under the number of SRS ports containedin one of the X SRS resources and possible values of the TPMIs under thenumbers of SRS ports contained in the remaining X-1 SRS resources; or

determining, by the base station, the total bit width of the TPMIsand/or transmit layer indicators corresponding to all the SRS resourcesaccording to the possible values of the TPMI and the number oftransmission streams under the number of SRS ports contained in one ofthe X SRS resources and the possible values of the TPMIs under themaximum among the numbers of SRS ports contained in the remaining X-1SRS resources; or determining, by the base station, the total bit widthof the TPMIs and/or transmit layer indicators corresponding to all theSRS resources according to the sum of possible values of the TPMI andthe number of transmission streams under the number of SRS portscontained in one of the X SRS resources and possible values of the TPMIsunder the numbers of SRS ports contained in the remaining X-1 SRSresources under the determined number of transmission streams; or

determining, by the base station, the total bit width of the TPMIsand/or transmit layers corresponding to all the SRS resources accordingto the maximum among possible values of the TPMI and the number oftransmission streams under the number of SRS ports contained in one ofthe X SRS resources and possible values of the TPMIs under the numbersof SRS ports contained in the remaining X-1 SRS resources under thedetermined number of transmission streams; or

determining, by the base station, the total bit width of the TPMIsand/or transmit layer indicators corresponding to all the SRS resourcesaccording to the possible values of the TPMI and the number oftransmission streams under the number of SRS ports contained in one ofthe X SRS resources and the possible values of the TPMIs under themaximum among the numbers of SRS ports contained in the remaining X-1SRS resources under the determined number of transmission streams; or

determining, by the base station, the total bit width of the TPMIsand/or transmit layer indicators corresponding to all the SRS resourcesaccording to the possible values of the TPMI and the number oftransmission streams under the number of SRS ports contained in one ofthe X SRS resources and the possible values of the TPMIs duringsingle-stream transmission under the numbers of SRS ports contained inthe remaining X-1 SRS resources; or

determining, by the base station, the total bit width of the TPMIsand/or transmit layer indicators corresponding to all the SRS resourcesaccording to the maximum among the possible values of the TPMI and thenumber of transmission streams under the number of SRS ports containedin one of the X SRS resources and the possible values of the TPMIsduring single-stream transmission under the numbers of SRS portscontained in the remaining X-1 SRS resources; or

determining, by the base station, the total bit width of the TPMIsand/or transmit layer indicators corresponding to all the SRS resourcesaccording to the possible values of the TPMI and the number oftransmission streams under the number of SRS ports contained in one ofthe X SRS resources and the possible values of the TPMIs duringsingle-stream transmission under the maximum among the numbers of SRSports contained in the remaining X-1 SRS resources.

This embodiment provides a variety of implementations of jointlyencoding the X groups of uplink scheduling information in the DCI basedon the number of antenna ports contained in the SRS resourcescorresponding to the X groups of uplink scheduling information,increasing the flexibility of uplink scheduling and improving theperformance of uplink transmission of the UE.

In one embodiment, the X groups of uplink scheduling informationcorrespond to X of N groups of SRS resources,

the X groups of uplink scheduling information are contained in X SRSresource sets of the N groups of SRS resources, where each group of theX groups of uplink scheduling information is contained in each SRSresource set.

This embodiment is well applicable to the non-codebook-based uplinktransmission mode, and indicates the uplink scheduling informationindependently for each group of SRS resources, increasing theflexibility of uplink scheduling and improving the performance of uplinktransmission of the UE.

In one embodiment, each group of uplink scheduling information includes:

an SRS Resource Indicator (SRI) of an SRS resource in an SRS resourceset corresponding to the each group of uplink scheduling information,and/or

a transmit layer indicator of an SRS resource in an SRS resource setcorresponding to the each group of uplink scheduling information.

In this embodiment, the base station can indicate the SRS ResourceIndicator (SRI) and/or transmit layer indicator independently for eachgroup of SRS resources in the non-codebook-based uplink transmissionmode, increasing the flexibility of uplink scheduling and improving theperformance of uplink transmission of the UE.

In one embodiment, after the base station receives the SRSs sent by theUE, the method further includes:

determining, by the base station, the number of transmission streams ofthe uplink signal according to the SRSs sent by the UE;

indicating the number of transmission streams to the UE, where thenumber of transmission streams corresponds to all of the X SRS resourcesets.

In this embodiment, the base station can indicate the same number oftransmission streams of the uplink signal for each group of SRSresources according to the SRSs sent by the UE in the non-codebook-baseduplink transmission mode, which enriches the implementations of uplinkscheduling and improves the user experience.

In one embodiment, sending, by the base station, the X groups of uplinkscheduling information to the UE, includes:

determining, the base station, the bit width of the X groups of uplinkscheduling information in the DCI, generating the DCI, and sending thedetermined X groups of uplink scheduling information to the UE throughthe DCI.

In this embodiment, the base station can determine the bit width of theX groups of uplink scheduling information in the DCI in thenon-codebook-based uplink transmission mode, encode the X groups ofuplink scheduling information in the DCI based on the bit width, andthen send the X groups of uplink scheduling information to the UEthrough the DCI, to indicate the uplink scheduling informationindependently for each group of SRS resources of the UE, increase theflexibility of uplink scheduling and improve the performance of uplinktransmission of the UE.

In one embodiment, sending, by the base station, the X groups of uplinkscheduling information to the UE, includes:

determining, by the base station, a bit width of the X groups of uplinkscheduling information in Downlink Control Information (DCI), accordingto a quantity of SRS resources contained in SRS resource setscorresponding to the X groups of uplink scheduling information,

generating the DCI, and

sending, by the base station, the X groups of uplink schedulinginformation to the UE through the DCI.

In this embodiment, the base station can determine the bit width of theX groups of uplink scheduling information in the DCI in thenon-codebook-based uplink transmission mode, encode the X groups ofuplink scheduling information in the DCI based on the bit width, andthen send the X groups of uplink scheduling information to the UEthrough the DCI, to indicate the uplink scheduling informationindependently for each group of SRS resources of the UE, increase theflexibility of uplink scheduling and improve the performance of uplinktransmission of the UE.

In one embodiment, the determining, by the base station, the bit widthof the X groups of uplink scheduling information in the DCI, accordingto the quantity of SRS resources contained in the SRS resource setscorresponding to the X groups of uplink scheduling information,includes:

determining, by the base station, a bit width of a j^(th) one of the Xgroups of uplink scheduling information in the DCI, according to aquantity of SRS resources in an SRS resource set corresponding to thej^(th) group of uplink scheduling information, and j is an integergreater than or equal to 1 and less than or equal to X.

In this embodiment, the base station can determine the bit width of theX groups of uplink scheduling information in the DCI in thenon-codebook-based uplink transmission mode, encode the X groups ofuplink scheduling information in the DCI based on the bit width, andthen send the X groups of uplink scheduling information to the UEthrough the DCI, to indicate the uplink scheduling informationindependently for each group of SRS resources of the UE, increase theflexibility of uplink scheduling and improve the performance of uplinktransmission of the UE.

In one embodiment, the scheduling information of each of the X SRSresource sets is independently coded in the DCI; and the schedulinginformation of each of the X SRS resource sets includes the SRI and/ortransmit layer indicator of each SRS resource;

determining, by the base station, the bit width of the X groups ofuplink scheduling information in the DCI, includes:

determining, by the base station, the bit width of the SRI and/ortransmit layer indicator corresponding to one SRS resource set accordingto the number of SRS resources included in the SRS resource set; or

determining, by the base station, the bit width of the SRI and/ortransmit layer indicator corresponding to each SRS resource setaccording to the maximum among the numbers of SRS resources included inall the SRS resource sets; or

determining, by the base station, the bit widths of the SRIs and/ortransmit layer indicators corresponding to the numbers of SRS resourcesaccording to the numbers of SRS resources included in each SRS resourceset, and taking the maximum value thereof as the bit width of the SRIand/or transmit layer indicator corresponding to each SRS resource set.

This embodiment provides a variety of implementations of independentlyencoding each of the X groups of uplink scheduling information in theDCI based on the numbers of SRS resources included in the SRS resourcesets corresponding to the X groups of uplink scheduling information,increasing the flexibility of uplink scheduling and improving theperformance of uplink transmission of the UE.

In one embodiment, the scheduling information of each of the X SRSresource sets is independently encoded in the DCI; the schedulinginformation of one of the X SRS resource sets includes the SRI andtransmit layer indicator of the one SRS resource set, and the schedulinginformation of each of the remaining X-1 SRS resource sets includes theSRI of the each SRS resource set; and the transmit layer indicatorincluded in the scheduling information of the one SRS resource setindicates the number of transmission streams of each of the X SRSresource sets simultaneously;

determining, by the base station, the bit width of the X groups ofuplink scheduling information in the DCI, includes:

determining, by the base station, the bit width of the SRI and transmitlayer indicator of the one SRS resource set according to the maximumamong the numbers of SRS resources contained in all the SRS resourcesets; and for each of the remaining X-1 SRS resource sets, determiningthe bit width of the SRI corresponding to the SRS resource set accordingto the number of SRS resources contained in the SRS resource set; or

determining, by the base station, the bit width of the SRI and transmitlayer indicator of the one SRS resource set according to the number ofSRS resources contained in the one SRS resource set; and for each of theremaining X-1 SRS resource sets, determining the bit width of the SRIcorresponding to the SRS resource set according to the number of SRSresources contained in the SRS resource set; or

determining, by the base station, the bit width of the SRI and transmitlayer indicator of the one SRS resource set according to the maximumamong the numbers of SRS resources contained in all the SRS resourcesets; and for each of the remaining X-1 SRS resource sets, determiningthe bit width of the SRI corresponding to the SRS resource set accordingto the maximum among the numbers of SRS resources contained in all theSRS resource sets; or

determining, by the base station, the bit width of the SRI and transmitlayer indicator of the one SRS resource set according to the number ofSRS resources contained in the one SRS resource set; and for each of theremaining X-1 SRS resource sets, determining the bit width of the SRIcorresponding to the SRS resource set according to the maximum among thenumbers of SRS resources contained in all the SRS resource sets; or

determining, by the base station, the bit width of the SRI and transmitlayer indicator of the one SRS resource set according to the maximumamong the numbers of SRS resources contained in all the SRS resourcesets; and for each of the remaining X-1 SRS resource sets, determiningthe bit width of the SRI corresponding to the SRS resource set accordingto the number of SRS resources contained in the SRS resource set and thenumber of transmission streams; or

determining, by the base station, the bit width of the SRI and transmitlayer indicator of the one SRS resource set according to the number ofSRS resources contained in the one SRS resource set; and for each of theremaining X-1 SRS resource sets, determining the bit width of the SRIcorresponding to the SRS resource set according to the number of SRSresources contained in the SRS resource set and the number oftransmission streams; or

determining, by the base station, the bit width of the SRI and transmitlayer indicator of the one SRS resource set according to the maximumamong the numbers of SRS resources contained in all the SRS resourcesets; and for each of the remaining X-1 SRS resource sets, determiningthe bit width of the SRI corresponding to the SRS resource set accordingto the maximum among the numbers of SRS resources contained in all theSRS resource sets and the number of transmission streams; or

determining, by the base station, the bit width of the SRI and transmitlayer indicator of the one SRS resource set according to the number ofSRS resources contained in the one SRS resource set; and for each of theremaining X-1 SRS resource sets, determining the bit width of the SRIcorresponding to the SRS resource set according to the maximum among thenumbers of SRS resources contained in all the SRS resource sets and thenumber of transmission streams; or

determining, by the base station, the bit width of the SRI and transmitlayer indicator of the one SRS resource set according to the maximumamong the numbers of SRS resources contained in all the SRS resourcesets; and for each of the remaining X-1 SRS resource sets, determiningthe bit widths of the SRIs corresponding to the numbers of SRS resourcesaccording to the numbers of SRS resources contained in all of the X SRSresource sets, and taking the maximum value thereof as the bit width ofthe SRI corresponding to each of the remaining X-1 SRS resource sets; or

determining, by the base station, the bit width of the SRI and transmitlayer indicator of the one SRS resource set according to the number ofSRS resources contained in the one SRS resource set; and for each of theremaining X-1 SRS resource sets, determining the bit widths of the SRIscorresponding to the numbers of SRS resources according to the numbersof SRS resources contained in all of the X SRS resource sets, and takingthe maximum value thereof as the bit width of the SRI corresponding toeach of the remaining X-1 SRS resource sets; or

determining, by the base station, the bit widths of the SRIs and the bitwidths of the transmit layer indicators corresponding to the numbers ofSRS resources according to the numbers of SRS resources contained in allof the X SRS resource sets, taking the maximum among all the determinedbit widths of the transmit layer indicators as the bit width of thetransmit layer indicator of the one SRS resource set, and taking themaximum among all the determined bit widths of the SRIs as the bit widthof the SRI corresponding to each of the X SRS resource sets; or

determining, by the base station, the bit widths of the SRIscorresponding to the numbers of SRS resources as well as thejointly-encoded bit widths of the SRIs and transmit layer indicatorscorresponding to the numbers of SRS resources according to the numbersof SRS resources contained in all of the X SRS resource sets, taking themaximum among all the determined jointly-encoded bit widths of the SRIsand transmit layer indicators as the bit width of the transmit layerindicator of the one SRS resource set, and taking the maximum among allthe determined bit widths of the SRIs as the bit width of the SRIcorresponding to each of the remaining X-1 SRS resource sets.

This embodiment provides a variety of implementations of independentlyencoding each of the X groups of uplink scheduling information in theDCI based on the numbers of SRS resources included in the SRS resourcesets corresponding to the X groups of uplink scheduling information,increasing the flexibility of uplink scheduling and improving theperformance of uplink transmission of the UE.

In a second aspect, an embodiment of the present disclosure provides anuplink transmission method, including:

receiving, by a UE, a message sent by a base station for instructing theUE to send Sounding Reference Signals (SRSs) corresponding to N groupsof SRS resources, where each group of SRS resources comprises one ormore SRS resources, and N is a positive integer greater than 1;

sending, by the UE, the SRSs;

receiving, by the UE, X groups of uplink scheduling information sent bythe base station; where each group of uplink scheduling informationcorresponds to one of the N groups of SRS resources, different groups ofuplink scheduling information correspond to different groups of SRSresources in the N groups of SRS resources, and X is a positive integergreater than 1 and less than 1, or X is a positive integer greater than1 and equal to N; and

performing, by the UE, uplink signal transmission according to the Xgroups of uplink scheduling information.

In one embodiment, one of the X groups of uplink scheduling informationcorresponds to one antenna panel of the UE.

In one embodiment, sending, by the UE, the SRSs corresponding to the Ngroups of SRS resources, includes:

sending, by the UE, the SRSs corresponding to the N groups of SRSresources by using a plurality of antenna panels, where the UE usesdifferent groups of antenna panels to send the SRSs on different groupsof SRS resources.

In one embodiment, after the UE receives the message sent by the basestation for instructing the UE to send SRSs corresponding to N groups ofSRS resources, the method further includes: receiving, by the UE,correspondence information sent by the base station, between the Xgroups of uplink scheduling information and the N groups of SRSresources.

In one embodiment, the X groups of uplink scheduling information arecontained in the DCI or RRC signaling.

In one embodiment, a signaling carrying the uplink schedulinginformation does not contain an SRS Resource Indicator (SRI) indicatingan SRS resource corresponding to X groups of the uplink schedulinginformation.

In one embodiment, at least one of the X groups of uplink schedulinginformation contains indication information indicating that the at leastone group of uplink scheduling information is not used for the uplinksignal transmission.

In one embodiment, before the UE receives the X groups of uplinkscheduling information sent by the base station, the method furtherincludes:

agreeing on, by the UE, the value of X with the base station.

In one embodiment, after the UE sends the SRSs corresponding to the Ngroups of SRS resources, the method further includes:

receiving, by the UE, SRS resource set indication information sent bythe base station, where the SRS resource set indication informationindicates SRS resource sets corresponding to the X groups of uplinkscheduling information.

In one embodiment, the X groups of uplink scheduling information includeone or more relative relationships among some of the X groups of uplinkscheduling information, or include one or more relative relationshipsamong all of the X groups of uplink scheduling information; where arelative relationship comprises phase rotation and/or amplitude scaling.

In one embodiment, the correspondence between the X groups of uplinkscheduling information and the N SRS resources is a correspondencepre-agreed by the base station and the UE.

In one embodiment, each group of uplink scheduling information includes:

a TPMI of an SRS resource corresponding to the each group of uplinkscheduling information, and/or a transmit layer indicator of an SRSresource corresponding to the each group of uplink schedulinginformation.

In one embodiment, different groups of uplink scheduling informationindicate an equal number of transmission streams.

In one embodiment, each group of SRS resources sent by the UE includesone SRS resource, and different groups of uplink scheduling informationcorrespond to different SRS resources;

after the UE sends the SRSs corresponding to the N groups of SRSresources, the method further includes:

receiving, by the UE, the number of transmission streams of the uplinksignal sent by the base station; where the number of transmissionstreams is the number of transmission streams of the uplink signaldetermined by the base station according to the SRSs sent by the UE, andthe number of transmission streams corresponds to all SRS resourcescorresponding to the X groups of uplink scheduling information.

In one embodiment, after the UE sends the SRSs corresponding to the Ngroups of SRS resources, the method further includes:

receiving, by the UE, SRS resource indication information sent by thebase station, where the SRS resource indication information indicatesone or more SRS resources corresponding to each group of uplinkscheduling information.

In one embodiment, receiving, by the UE, X groups of uplink schedulinginformation sent by the base station, includes:

receiving, by the UE, Downlink Control Information (DCI) sent by thebase station, and obtaining the X groups of uplink schedulinginformation from the DCI;

the receiving, by the UE, the DCI sent by the base station, andobtaining the X groups of uplink scheduling information from the DCI,comprises:

determining, by the UE, a bit width of the X groups of uplink schedulinginformation in the DCI according to a quantity of antenna portscontained in SRS resources corresponding to the X groups of uplinkscheduling information;

decoding, by the UE, the DCI according to the bit width of the X groupsof uplink scheduling information in the DCI to obtain the X groups ofuplink scheduling information.

In one embodiment, determining, by the UE, the bit width of the X groupsof uplink scheduling information in the DCI according to the quantity ofantenna ports contained in the SRS resources corresponding to the Xgroups of uplink scheduling information, includes:

determining, by the UE, a bit width of a k^(th) one of the X groups ofuplink scheduling information in the DCI, according to a quantity ofantenna ports of SRS resources in the group of SRS resourcescorresponding to the k^(th) group of uplink scheduling information, andk is an integer greater than or equal to 1 and less than or equal to X.

In one embodiment, each group of SRSs sent by the UE corresponds to oneSRS resource, and different groups of uplink scheduling informationcorrespond to different SRS resources; the scheduling information ofeach of X SRS resources corresponding to the X groups of uplinkscheduling information is independently encoded in the DCI; and thescheduling information of each of the X SRS resources includes the TPMIand/or transmit layer indicator of each SRS resource;

determining, by the UE, a bit width of the X groups of uplink schedulinginformation in DCI according to the number of antenna ports contained inSRS resources corresponding to the X groups of uplink schedulinginformation, includes:

determining, by the base station, the bit width of the TPMI and/ortransmit layer indicator corresponding to each of the X SRS resourcesaccording to the number of antenna ports contained in the SRS resource;or

determining, by the UE, the bit width of the TPMI and/or transmit layerindicator corresponding to each SRS resource according to the maximumvalue of the numbers of antenna ports contained in all of the X SRSresources; or

determining, by the UE, the bit width of the TPMI and/or transmit layerindicator corresponding to each of the numbers of antenna portsaccording to the number of antenna ports contained in each of the X SRSresources, and taking the maximum value in all the determined bit widthsas the bit width of the TPMI and/or transmit layer indicatorcorresponding to each SRS resource.

In one embodiment, each group of SRSs sent by the UE corresponds to oneSRS resource, and different groups of uplink scheduling informationcorrespond to different SRS resources; the scheduling information of allof X SRS resources corresponding to the X groups of uplink schedulinginformation is jointly encoded in the DCI; and the schedulinginformation of each of the X SRS resources includes the TPMI and/ortransmit layer indicator of each SRS resource;

determining, by the UE, a bit width of the X groups of uplink schedulinginformation in DCI according to the number of antenna ports contained inSRS resources corresponding to the X groups of uplink schedulinginformation, includes:

determining, by the UE, the total bit width of the TPMIs and/or transmitlayer indicators corresponding to all the SRS resources according to thesum of possible values of the TPMIs and/or the numbers of transmissionstreams under the numbers of antenna ports contained in all the SRSresources; or

determining, by the UE, the total bit width of the TPMIs and/or transmitlayer indicators corresponding to all the SRS resources according to themaximum value among the possible values of the TPMIs and/or the numbersof transmission streams under the numbers of SRS antenna ports containedin all the SRS resources; or

determining, by the UE, the total bit width of the TPMIs and/or transmitlayer indicators corresponding to all the SRS resources according to thepossible values of the TPMIs and/or the numbers of transmission streamsunder the maximum among the numbers of antenna ports contained in allthe SRS resources.

In one embodiment, each group of SRSs sent by the UE corresponds to oneSRS resource, and different groups of uplink scheduling informationcorrespond to different SRS resources; the scheduling information ofeach of X SRS resources corresponding to the X groups of uplinkscheduling information is independently encoded in the DCI; thescheduling information of one of the X SRS resources includes the TPMIand transmit layer indicator of the one SRS resource, and the schedulinginformation of each of the remaining X-1 SRS resources includes the TPMIof the SRS resource; and the transmit layer indicator included in thescheduling information of the one SRS resource indicates the number oftransmission streams of each of the X SRS resources simultaneously;

determining, by the UE, a bit width of the X groups of uplink schedulinginformation in DCI according to the number of antenna ports contained inSRS resources corresponding to the X groups of uplink schedulinginformation, includes:

determining, by the UE, the bit width of the TPMI and transmit layerindicator of the one SRS resource according to the maximum among thenumbers of antenna ports contained in all the SRS resources; anddetermining the bit width of the TPMI indication informationcorresponding to each of the remaining X-1 SRS resources according tothe number of antenna ports contained in the SRS resource; or

determining, by the UE, the bit width of the TPMI and transmit layerindicator of the one SRS resource according to the number of antennaports contained in the one SRS resource; and determining the bit widthof the TPMI indication information corresponding to each of theremaining X-1 SRS resources according to the number of antenna portscontained in the SRS resource; or

determining, by the UE, the bit width of the TPMI and transmit layerindicator of the one SRS resource according to the maximum among thenumbers of antenna ports contained in all the SRS resources; anddetermining the bit width of the TPMI indication informationcorresponding to each of the remaining X-1 SRS resources according tothe maximum among the numbers of antenna ports contained in all the SRSresources; or

determining, by the UE, the bit width of the TPMI and transmit layerindicator of the one SRS resource according to the number of antennaports contained in the one SRS resource; and determining the bit widthof the TPMI indication information corresponding to each of theremaining X-1 SRS resources according to the maximum among the numbersof antenna ports contained in all the SRS resources; or

determining, by the UE, the bit width of the TPMI and transmit layerindicator of the one SRS resource according to the maximum among thenumbers of antenna ports contained in all the SRS resources; anddetermining the bit widths of the TPMIs corresponding to the numbers ofantenna ports according to the number of antenna ports contained in eachof the X SRS resources, and taking the maximum value thereof as the bitwidth of the TPMI corresponding to each of the remaining X-1 SRSresources; or

determining, by the UE, the bit width of the TPMI and transmit layerindicator of the one SRS resource according to the number of antennaports contained in the one SRS resource; and determining the bit widthsof the TPMIs corresponding to the numbers of antenna ports according tothe number of antenna ports contained in each of the X SRS resources,and taking the maximum value thereof as the bit width of the TPMIcorresponding to each of the remaining X-1 SRS resources; or

determining, by the UE, the bit widths of the TPMIs and the bit widthsof the transmit layer indicators corresponding to the numbers of antennaports according to the number of antenna ports contained in each of theX SRS resources, taking the maximum among the bit widths of the transmitlayer indicators as the bit width of the transmit layer indicator of theone SRS resource, and taking the maximum among the bit widths of theTPMI indication information as the bit width of the TPMI correspondingto each of the X SRS resources; or

determining, by the UE, the bit widths of the TPMIs corresponding to thenumbers of antenna ports as well as the jointly-encoded bit widths ofthe TPMIs and transmit layer indicators corresponding to the numbers ofantenna ports according to the number of antenna ports contained in eachof the X SRS resources, taking the maximum among the jointly-encoded bitwidths of the TPMIs and transmit layer indicators as the bit width ofthe transmit layer indicator of the one SRS resource, and taking themaximum among the bit widths of the TPMI indication information as thebit width of the TPMI corresponding to each of the X SRS resources.

In one embodiment, each group of SRSs sent by the UE corresponds to oneSRS resource, and different groups of uplink scheduling informationcorrespond to different SRS resources; the scheduling information ofeach of X SRS resources corresponding to the X groups of uplinkscheduling information is independently encoded in the DCI; thescheduling information of one of the X SRS resources includes the TPMIand transmit layer indicator of the one SRS resource, and the schedulinginformation of each of the remaining X-1 SRS resources includes the TPMIof the SRS resource; and the transmit layer indicator included in thescheduling information of the one SRS resource indicates the number oftransmission streams of each of the X SRS resources simultaneously;

determining, by the UE, a bit width of the X groups of uplink schedulinginformation in DCI according to the number of antenna ports contained inSRS resources corresponding to the X groups of uplink schedulinginformation, includes:

determining, by the UE, the bit width of the TPMI and transmit layerindicator of the one SRS resource according to the maximum among thenumbers of antenna ports contained in all the SRS resources; and foreach of the remaining X-1 SRS resources, determining the bit width ofthe TPMI corresponding to the SRS resource according to the number oftransmission streams and the number of antenna ports contained in theSRS resource; or

determining, by the UE, the bit width of the TPMI and transmit layerindicator of the one SRS resource according to the number of antennaports contained in the one SRS resource; and for each of the remainingX-1 SRS resources, determining the bit width of the TPMI correspondingto the SRS resource according to the number of transmission streams andthe number of antenna ports contained in the SRS resource; or

determining, by the UE, the bit width of the TPMI and transmit layerindicator of the one SRS resource according to the maximum among thenumbers of antenna ports contained in all the SRS resources; and foreach of the remaining X-1 SRS resources, determining the bit widths ofthe TPMIs corresponding to other SRS resources according to the numberof transmission streams and the maximum among the numbers of antennaports contained in all the SRS resources; or

determining, by the UE, the bit width of the TPMI and transmit layerindicator of the one SRS resource according to the number of antennaports contained in the one SRS resource; and for each of the remainingX-1 SRS resources, determining the bit widths of the TPMIs correspondingto other SRS resources according to the number of transmission streamsand the maximum among the numbers of antenna ports contained in all theSRS resources; or

determining, by the UE, the bit width of the TPMI and transmit layerindicator of the one SRS resource according to the maximum among thenumbers of antenna ports contained in all the SRS resources; and foreach of the remaining X-1 SRS resources, determining the bit widths ofthe TPMIs corresponding to the numbers of antenna ports according to thenumber of transmission streams and the number of antenna ports containedin each of the X SRS resources, and taking the maximum value thereof asthe bit width of the TPMI corresponding to the SRS resource; or

determining, by the UE, the bit width of the TPMI and transmit layerindicator of the one SRS resource according to the number of antennaports contained in the one SRS resource; and for each of the remainingX-1 SRS resources, determining the bit widths of the TPMIs correspondingto the numbers of antenna ports according to the number of transmissionstreams and the number of antenna ports contained in each of the X SRSresources, and taking the maximum value thereof as the bit width of theTPMI corresponding to the SRS resource; or

determining, by the UE, the bit widths of the transmit layer indicatorsand the bit widths of the TPMIs during single-stream transmissioncorresponding to the numbers of antenna ports according to the number ofantenna ports contained in each of the X SRS resources, taking themaximum among all the determined bit widths of the transmit layerindicators as the bit width of the transmit layer indicator of the oneSRS resource, and taking the maximum among all the determined bit widthsof the TPMIs as the bit width of the TPMI corresponding to each of theremaining X-1 SRS resources; or

determining, by the UE, the bit widths of the TPMIs during single-streamtransmission corresponding to the numbers of antenna ports as well asthe jointly-encoded bit widths of the TPMIs and transmit layerindicators corresponding to the numbers of antenna ports according tothe number of antenna ports contained in each of the X SRS resources,taking the maximum among all the determined jointly-encoded bit widthsof the TPMIs and transmit layer indicators as the bit width of thetransmit layer indicator of the one SRS resource, and taking the maximumamong the bit widths of the TPMIs during single-stream transmission asthe bit width of the TPMI corresponding to each of the remaining X-1 SRSresources.

In one embodiment, each group of SRSs sent by the UE corresponds to oneSRS resource, and different groups of uplink scheduling informationcorrespond to different SRS resources; the scheduling information ofeach of X SRS resources corresponding to the X groups of uplinkscheduling information is jointly encoded in the DCI; the schedulinginformation of one of the X SRS resources includes the TPMI and transmitlayer indicator of the one SRS resource, and the scheduling informationof each of the remaining X-1 SRS resources includes the TPMI of the SRSresource; and the transmit layer indicator included in the schedulinginformation of the one SRS resource indicates the number of transmissionstreams of each of the X SRS resources simultaneously;

determining, by the UE, a bit width of the X groups of uplink schedulinginformation in DCI according to the number of antenna ports contained inSRS resources corresponding to the X groups of uplink schedulinginformation, includes:

determining, by the UE, the total bit width of the TPMIs and/or transmitlayer indicators corresponding to all the SRS resources according to thesum of possible values of the TPMI and the number of transmissionstreams under the number of SRS ports contained in one of the X SRSresources and possible values of the TPMIs under the numbers of SRSports contained in the remaining X-1 SRS resources; or

determining, by the UE, the total bit width of the TPMIs and/or transmitlayer indicators corresponding to all the SRS resources according to themaximum among possible values of the TPMI and the number of transmissionstreams under the number of SRS ports contained in one of the X SRSresources and possible values of the TPMIs under the numbers of SRSports contained in the remaining X-1 SRS resources; or

determining, by the UE, the total bit width of the TPMIs and/or transmitlayer indicators corresponding to all the SRS resources according to thepossible values of the TPMI and the number of transmission streams underthe number of SRS ports contained in one of the X SRS resources and thepossible values of the TPMIs under the maximum among the numbers of SRSports contained in the remaining X-1 SRS resources; or determining, bythe UE, the total bit width of the TPMIs and/or transmit layerindicators corresponding to all the SRS resources according to the sumof possible values of the TPMI and the number of transmission streamsunder the number of SRS ports contained in one of the X SRS resourcesand possible values of the TPMIs under the numbers of SRS portscontained in the remaining X-1 SRS resources under the determined numberof transmission streams; or

determining, by the UE, the total bit width of the TPMIs and/or transmitlayer indicators corresponding to all the SRS resources according to themaximum among possible values of the TPMI and the number of transmissionstreams under the number of SRS ports contained in one of the X SRSresources and possible values of the TPMIs under the numbers of SRSports contained in the remaining X-1 SRS resources under the determinednumber of transmission streams; or

determining, by the UE, the total bit width of the TPMIs and/or transmitlayer indicators corresponding to all the SRS resources according to thepossible values of the TPMI and the number of transmission streams underthe number of SRS ports contained in one of the X SRS resources and thepossible values of the TPMIs under the maximum among the numbers of SRSports contained in the remaining X-1 SRS resources under the determinednumber of transmission streams; or

determining, by the UE, the total bit width of the TPMIs and/or transmitlayer indicators corresponding to all the SRS resources according to thepossible values of the TPMI and the number of transmission streams underthe number of SRS ports contained in one of the X SRS resources and thepossible values of the TPMIs during single-stream transmission under thenumbers of SRS ports contained in the remaining X-1 SRS resources; or

determining, by the UE, the total bit width of the TPMIs and/or transmitlayer indicators corresponding to all the SRS resources according to themaximum among the possible values of the TPMI and the number oftransmission streams under the number of SRS ports contained in one ofthe X SRS resources and the possible values of the TPMIs duringsingle-stream transmission under the numbers of SRS ports contained inthe remaining X-1 SRS resources; or

determining, by the UE, the total bit width of the TPMIs and/or transmitlayer indicators corresponding to all the SRS resources according to thepossible values of the TPMI and the number of transmission streams underthe number of SRS ports contained in one of the X SRS resources and thepossible values of the TPMIs during single-stream transmission under themaximum among the numbers of SRS ports contained in the remaining X-1SRS resources.

In one embodiment, the X groups of uplink scheduling information arecontained in X SRS resource sets of the N groups of SRS resources, whereeach group of the X groups of uplink scheduling information is containedin each SRS resource set.

In one embodiment, each X group of uplink scheduling informationcomprises: an SRS Resource Indicator (SRI) of an SRS resource in an SRSresource set corresponding to the each group of uplink schedulinginformation, and/or a transmit layer indicator of an SRS resource in anSRS resource set corresponding to the each group of uplink schedulinginformation.

In one embodiment, the receiving, by the UE, the X groups of uplinkscheduling information sent by the base station, includes:

receiving, by the UE, DCI sent by the base station, and obtaining the Xgroups of uplink scheduling information from the DCI;

the receiving, by the UE, DCI sent by the base station, and obtainingthe X groups of uplink scheduling information from the DCI, comprises:

determining, by the UE, a bit width of the X groups of uplink schedulinginformation in the DCI according to a quantity of SRS resourcescontained in SRS resource sets corresponding to the X groups of uplinkscheduling information;

decoding, by the UE, the DCI according to the bit width of the X groupsof uplink scheduling information in the DCI to obtain the X groups ofuplink scheduling information.

In one embodiment, the determining, by the UE, the bit width of the Xgroups of uplink scheduling information in the DCI, according to thequantity of SRS resources contained in the SRS resource setscorresponding to the X groups of uplink scheduling information,includes:

determining, by the UE, a bit width of a j^(th) one of the X groups ofuplink scheduling information in the DCI, according to a quantity of SRSresources in an SRS resource set corresponding to the j^(th) group ofuplink scheduling information, and j is an integer greater than or equalto 1 and less than or equal to X.

In one embodiment, the scheduling information of each of the X SRSresource sets is independently coded in the DCI; and the schedulinginformation of each of the X SRS resource sets includes the SRI and/ortransmit layer indicator of each SRS resource;

determining, by the UE, the bit width of the X groups of uplinkscheduling information in the DCI, includes:

determining, by the UE, the bit width of the SRI and/or transmit layerindicator corresponding to one SRS resource set according to the numberof SRS resources included in the SRS resource set; or

determining, by the UE, the bit width of the SRI and/or transmit layerindicator corresponding to each SRS resource set according to themaximum among the numbers of SRS resources included in all the SRSresource sets; or

determining, by the UE, the bit widths of the SRIs and/or transmit layerindicators corresponding to the numbers of SRS resources according tothe numbers of SRS resources included in all of the X SRS resource sets,and taking the maximum value thereof as the bit width of the SRI and/ortransmit layer indicator corresponding to each SRS resource set.

In one embodiment, the scheduling information of each of the X SRSresource sets is independently encoded in the DCI; the schedulinginformation of one of the X SRS resource sets includes the SRI andtransmit layer indicator of the one SRS resource set, and the schedulinginformation of each of the remaining X-1 SRS resource sets includes theSRI of the each SRS resource set; and the transmit layer indicatorincluded in the scheduling information of the one SRS resource setindicates the number of transmission streams of each of the X SRSresource sets simultaneously;

determining, by the UE, the bit width of the X groups of uplinkscheduling information in the DCI, includes:

determining, by the UE, the bit width of the SRI and transmit layerindicator of the one SRS resource set according to the maximum among thenumbers of SRS resources contained in all the SRS resource sets; and foreach of the remaining X-1 SRS resource sets, determining the bit widthof the SRI corresponding to the SRS resource set according to the numberof SRS resources contained in the SRS resource set; or

determining, by the UE, the bit width of the SRI and transmit layer ofthe one SRS resource set according to the number of SRS resourcescontained in the one SRS resource set; and for each of the remaining X-1SRS resource sets, determining the bit width of the SRI corresponding tothe SRS resource set according to the number of SRS resources containedin the SRS resource set; or

determining, by the UE, the bit width of the SRI and transmit layerindicator of the one SRS resource set according to the maximum among thenumbers of SRS resources contained in all the SRS resource sets; and foreach of the remaining X-1 SRS resource sets, determining the bit widthof the SRI corresponding to the SRS resource set according to themaximum among the numbers of SRS resources contained in all the SRSresource sets; or

determining, by the UE, the bit width of the SRI and transmit layerindicator of the one SRS resource set according to the number of SRSresources contained in the one SRS resource set; and for each of theremaining X-1 SRS resource sets, determining the bit width of the SRIcorresponding to the SRS resource set according to the maximum among thenumbers of SRS resources contained in all the SRS resource sets; or

determining, by the UE, the bit width of the SRI and transmit layerindicator of the one SRS resource set according to the maximum among thenumbers of SRS resources contained in all the SRS resource sets; and foreach of the remaining X-1 SRS resource sets, determining the bit widthof the SRI corresponding to the SRS resource set according to the numberof SRS resources contained in the SRS resource set and the number oftransmission streams; or

determining, by the UE, the bit width of the SRI and transmit layerindicator of the one SRS resource set according to the number of SRSresources contained in the one SRS resource set; and for each of theremaining X-1 SRS resource sets, determining the bit width of the SRIcorresponding to the SRS resource set according to the number of SRSresources contained in the SRS resource set and the number oftransmission streams; or

determining, by the UE, the bit width of the SRI and transmit layerindicator of the one SRS resource set according to the maximum among thenumbers of SRS resources contained in all the SRS resource sets; and foreach of the remaining X-1 SRS resource sets, determining the bit widthof the SRI corresponding to the SRS resource set according to themaximum among the numbers of SRS resources contained in all the SRSresource sets and the number of transmission streams; or

determining, by the UE, the bit width of the SRI and transmit layerindicator of the one SRS resource set according to the number of SRSresources contained in the one SRS resource set; and for each of theremaining X-1 SRS resource sets, determining the bit width of the SRIcorresponding to the SRS resource set according to the maximum among thenumbers of SRS resources contained in all the SRS resource sets and thenumber of transmission streams; or

determining, by the UE, the bit width of the SRI and transmit layerindicator of the one SRS resource set according to the maximum among thenumbers of SRS resources contained in all the SRS resource sets; and foreach of the remaining X-1 SRS resource sets, determining the bit widthsof the SRIs corresponding to the numbers of SRS resources according tothe numbers of SRS resources contained in all of the X SRS resourcesets, and taking the maximum value thereof as the bit width of the SRIcorresponding to each of the remaining X-1 SRS resource sets; or

determining, by the UE, the bit width of the SRI and transmit layerindicator of the one SRS resource set according to the number of SRSresources contained in the one SRS resource set; and for each of theremaining X-1 SRS resource sets, determining the bit widths of the SRIscorresponding to the numbers of SRS resources according to the numbersof SRS resources contained in all of the X SRS resource sets, and takingthe maximum value thereof as the bit width of the SRI corresponding toeach of the remaining X-1 SRS resource sets; or

determining, by the UE, the bit widths of the SRIs and the bit widths ofthe transmit layer indicators corresponding to the numbers of SRSresources according to the numbers of SRS resources contained in all ofthe X SRS resource sets, taking the maximum among all the determined bitwidths of the transmit layer indicators as the bit width of thetransmission stream number indicator of the one SRS resource set, andtaking the maximum among all the determined bit widths of the SRIs asthe bit width of the SRI corresponding to each of the X SRS resourcesets; or

determining, by the UE, the bit widths of the SRIs corresponding to thenumbers of SRS resources as well as the jointly-encoded bit widths ofthe SRIs and transmit layer indicators corresponding to the numbers ofSRS resources according to the numbers of SRS resources contained in allof the X SRS resource sets, taking the maximum among all the determinedjointly-encoded bit widths of the SRIs and transmit layer indicators asthe bit width of the transmit layer indicator of the one SRS resourceset, and taking the maximum among all the determined bit widths of theSRIs as the bit width of the SRI corresponding to each of the remainingX-1 SRS resource sets.

In a third aspect, an embodiment of the present disclosure furtherprovides an uplink transmission apparatus, including:

a sending device configured to instruct a User Equipment (UE) to sendSounding Reference Signals (SRSs) corresponding to N groups of SRSresources, where each group of SRS resources comprises one or more SRSresources, and N is a positive integer greater than 1;

a receiving device configured to receive the SRSs sent by the UE;

a processing device configured to determine X groups of uplinkscheduling information; where each group of uplink schedulinginformation corresponds to one of the N groups of SRS resources,different groups of uplink scheduling information correspond todifferent groups of SRS resources in the N groups of SRS resources, andX is a positive integer greater than 1 and less than N, or X is apositive integer greater than 1 and equal to N;

the sending device being further configured to send the X groups ofuplink scheduling information to the UE for the UE performing uplinksignal transmission according to the X groups of uplink schedulinginformation.

In one embodiment, one of the X groups of uplink scheduling informationcorresponds to one antenna panel of the UE.

In one embodiment, the SRSs are sent by the UE using a plurality ofantenna panels, where the SRSs are sent by the UE, using differentgroups of antenna panels, on different groups of SRS resources.

In one embodiment, the sending device is further configured to:

send the correspondence information between the X groups of uplinkscheduling information and the N groups of SRS resources to the UE afterinstructing the UE to send the SRSs corresponding to the N groups of SRSresources.

In one embodiment, a signaling carrying the uplink schedulinginformation does not contain an SRS Resource Indicator (SRI) indicatingan SRS resource corresponding to the uplink scheduling information.

In one embodiment, at least one of the X groups of uplink schedulinginformation contains indication information indicating that the at leastone group of uplink scheduling information is not used for the uplinksignal transmission.

In one embodiment, the device is further configured to:

agree on the value of X with the UE before determining the X groups ofuplink scheduling information.

In one embodiment, the sending device is further configured to:

send the resource set indication information to the UE after thereceiving device receives the SRSs sent by the UE, where the SRSresource set indication information indicates SRS resource setscorresponding to the uplink scheduling information.

In one embodiment, the X groups of uplink scheduling information includeone or more relative relationships among some of the X groups of uplinkscheduling information, or include one or more relative relationshipsamong all of the X groups of uplink scheduling information; and arelative relationship comprises phase rotation and/or amplitude scaling.

In one embodiment, each group of uplink scheduling information includes:a TPMI of an SRS resource corresponding to the each group of uplinkscheduling information, and/or a transmit layer indicator of an SRSresource corresponding to the each group of uplink schedulinginformation.

In one embodiment, different groups of uplink scheduling informationindicate the same number of transmission streams.

In one embodiment, the sending device is further configured to:

send the SRS resource indication information to the UE after thereceiving device receives the SRSs sent by the UE based on theinstruction, where the SRS resource indication information indicates oneor more SRS resources corresponding to each group of uplink schedulinginformation.

In one embodiment, the sending device is specifically configured to:

determine a bit width of the X groups of uplink scheduling informationin DCI, according to a quantity of antenna ports contained in SRSresources corresponding to the X groups of uplink schedulinginformation; generate the DCI, and send the X groups of uplinkscheduling information to the UE through the DCI.

In one embodiment, the sending device is configured to:

determining a bit width of a k^(th) one of the X groups of uplinkscheduling information in the DCI, according to a quantity of antennaports of SRS resources in the group of SRS resources corresponding tothe k^(th) group of uplink scheduling information, and k is an integergreater than or equal to 1 and less than or equal to X.

In one embodiment, the X groups of uplink scheduling information arecontained in X SRS resource sets of the N groups of SRS resources, whereeach group of the X groups of uplink scheduling information is containedin each SRS resource set.

In one embodiment, each group of uplink scheduling informationcomprises:

an SRI of an SRS resource in an SRS resource set corresponding to theeach group of uplink scheduling information, and/or a transmit layerindicator of an SRS resource in an SRS resource set corresponding to theeach group of uplink scheduling information.

In one embodiment, the sending device is configured to:

determine a bit width of the X groups of uplink scheduling informationin DCI, according to a quantity of SRS resources contained in SRSresource sets corresponding to the X groups of uplink schedulinginformation; generate the DCI, and send the X groups of uplinkscheduling information to the UE through the DCI.

In one embodiment, the sending device is specifically configured to:

determine a bit width of a j^(th) one of the X groups of uplinkscheduling information in the DCI, according to a quantity of SRSresources in an SRS resource set corresponding to the j^(th) group ofuplink scheduling information, where j is an integer greater than orequal to 1 and less than or equal to X.

In a fourth aspect, an embodiment of the present disclosure furtherprovides an uplink transmission apparatus, including:

a receiving device configured to receive a message sent by a basestation for instructing the apparatus to send Sounding Reference Signals(SRSs) corresponding to N groups of SRS resources, where each group ofSRS resources comprises one or more SRS resources, and N is a positiveinteger greater than 1;

a sending device configured to send the SRSs;

the receiving device being further configured to: receive X groups ofuplink scheduling information sent by the base station; where each groupof uplink scheduling information corresponds to one of the N groups ofSRS resources, different groups of uplink scheduling informationcorrespond to different groups pf SRS resources in the N groups of SRSresources, and X is a positive integer greater than 1 and less than 1,or X is a positive integer greater than 1 and equal to N;

a processing device configured to perform uplink signal transmissionaccording to the X groups of uplink scheduling information.

In one embodiment, one of the X groups of uplink scheduling informationcorresponds to one antenna panel of the apparatus.

In one embodiment, the sending device is configured to:

send the SRSs corresponding to the N groups of SRS resources by using aplurality of antenna panels, where the UE uses different groups ofantenna panels to send the SRSs on different groups of SRS resources.

In one embodiment, the receiving device is further configured to:

receive the correspondence information between the X groups of uplinkscheduling information and the N groups of SRS resources sent by thebase station after receiving the message sent by the base station forinstructing the apparatus to send the SRSs corresponding to the N groupsof SRS resources.

In one embodiment, a signaling carrying the uplink schedulinginformation does not contain an SRS Resource Indicator (SRI) indicatingan SRS resource corresponding to X groups of the uplink schedulinginformation.

In one embodiment, at least one of the X groups of uplink schedulinginformation contains indication information indicating that the at leastone group of uplink scheduling information is not used for the uplinksignal transmission.

In one embodiment, the processing device is further configured to:

agree on the value of X with the base station before the receivingdevice receives the X groups of uplink scheduling information sent bythe base station.

In one embodiment, the receiving device is further configured to:

receive the SRS resource set indication information sent by the basestation after the sending device sends the SRSs corresponding to the Ngroups of SRS resources, where the SRS resource set indicationinformation indicates SRS resource sets corresponding to the X groups ofuplink scheduling information.

In one embodiment, the X groups of uplink scheduling information includeone or more relative relationships among some of the X groups of uplinkscheduling information, or include one or more relative relationshipsamong all of the X groups of uplink scheduling information; and arelative relationship comprises phase rotation and/or amplitude scaling.

In one embodiment, each group of uplink scheduling informationcomprises:

a TPMI of an SRS resource corresponding to the each group of uplinkscheduling information, and/or a transmit layer indicator of an SRSresource corresponding to the each group of uplink schedulinginformation.

In one embodiment, different groups of uplink scheduling informationindicate the same number of transmission streams.

In one embodiment, the receiving device is further configured to:

receive the SRS resource indication information sent by the base stationafter the sending device sends the SRSs corresponding to the N groups ofSRS resources, where the SRS resource indication information indicatesone or more SRS resources corresponding to each group of uplinkscheduling information.

In one embodiment, the receiving device is further configured to:

receive X groups of uplink scheduling information sent by the basestation, which includes:

receiving DCI sent by the base station, and obtaining the X groups ofuplink scheduling information from the DCI;

the processing device is configured to: determine a bit width of the Xgroups of uplink scheduling information in the DCI according to aquantity of antenna ports contained in SRS resources corresponding tothe X groups of uplink scheduling information; decode the DCI accordingto the bit width of the X groups of uplink scheduling information in theDCI to obtain the X groups of uplink scheduling information.

In one embodiment, the processing device is configured to:

determine a bit width of a k^(th) one of the X groups of uplinkscheduling information in the DCI, according to a quantity of antennaports of SRS resources in the group of SRS resources corresponding tothe k^(th) group of uplink scheduling information, and k is an integergreater than or equal to 1 and less than or equal to X.

In one embodiment, the X groups of uplink scheduling information arecontained in X SRS resource sets of the N groups of SRS resources, andeach group of the X groups of uplink scheduling information is containedin each SRS resource set.

In one embodiment, each X group of uplink scheduling informationincludes: an SRI of an SRS resource in an SRS resource set correspondingto the each group of uplink scheduling information, and/or a transmitlayer indicator of an SRS resource in an SRS resource set correspondingto the each group of uplink scheduling information.

In one embodiment, the receiving device is further configured to:

receive X groups of uplink scheduling information sent by the basestation, which includes:

receiving DCI sent by the base station, and obtaining the X groups ofuplink scheduling information from the DCI;

the processing device is configured to: determine a bit width of the Xgroups of uplink scheduling information in the DCI according to aquantity of SRS resources contained in SRS resource sets correspondingto the X groups of uplink scheduling information; decode the DCIaccording to the bit width of the X groups of uplink schedulinginformation in the DCI to obtain the X groups of uplink schedulinginformation.

In one embodiment, the processing device is configured to:

determine a bit width of a j^(th) one of the X groups of uplinkscheduling information in the DCI, according to a quantity of SRSresources in an SRS resource set corresponding to the j^(th) group ofuplink scheduling information, and j is an integer greater than or equalto 1 and less than or equal to X.

In a fifth aspect, an embodiment of the present disclosure provides anuplink transmission device, including:

at least one processor, and

a memory and a communication interface communicatively connected to theat least one processor;

and the memory stores instructions that can be executed by the at leastone processor, and the at least one processor performs the methoddescribed in the first or second aspect of the embodiments of thedisclosure via the communication interface by executing the instructionsstored in the memory.

In a sixth aspect, an embodiment of the disclosure provides a computerreadable storage medium storing the computer instructions, which cause acomputer to perform the method described in the first or second aspectof the embodiments of the disclosure when running on the computer.

Embodiments of the disclosure, the base station instructs the UE to sendthe SRSs corresponding to N groups of SRS resources, then determines Xgroups of uplink scheduling information based on the received SRSs sentby the UE, and sends the determined X groups of uplink schedulinginformation to the UE, and each of the X groups of uplink schedulinginformation corresponds to one of the N groups of SRS resources, anddifferent groups of uplink scheduling information correspond todifferent groups of SRS resources, so that the UE can perform, accordingto each group of uplink scheduling information, the uplink signaltransmission by using the uplink transmission characteristics whensending the SRS corresponding to this group of uplink schedulinginformation after receiving the X groups of uplink schedulinginformation, improving the flexibility of uplink scheduling.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to illustrate the embodiments of the disclosure more clearly,the accompanying figures which need to be used in describing theembodiments will be introduced below briefly. The accompanying figuresdescribed below are only some embodiments of the disclosure, and otheraccompanying figures can also be obtained.

FIG. 1 is a schematic diagram of performing the analog beamforming onintermediate frequency signals;

FIG. 2 is a schematic diagram of performing the analog beamforming onradio frequency signals;

FIG. 3 is a schematic diagram of the digital-analog hybrid beamforming;

FIG. 4 is a schematic diagram of multi-antenna panel transmission;

FIG. 5 is a schematic flowchart of an uplink transmission method in anembodiment of the present disclosure;

FIG. 6 is a structural schematic diagram of an uplink transmissionapparatus in an embodiment of the present disclosure;

FIG. 7 is a structural schematic diagram of another uplink transmissionapparatus in an embodiment of the present disclosure;

FIG. 8 is a structural schematic diagram of an uplink transmissiondevice in an embodiment of the present disclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

In The embodiments of the disclosure will be described clearly andcompletely below in combination with the accompanying drawings in theembodiments of the disclosure. The described embodiments are a part ofthe embodiments of the disclosure but not all the embodiments.

It should be understood that the embodiments of the disclosure can beapplied to various communication systems, for example, Global System ofMobile communication (GSM) system, Code Division Multiple Access (CDMA)system, Wideband Code Division Multiple Access (WCDMA) system, GeneralPacket Radio Service (GPRS), Long Term Evolution (LTE) system, Advancedlong term evolution (LTE-A) system, Universal Mobile TelecommunicationSystem (UMTS), New Radio (NR) and the like.

It should be further understood that the User Equipment (UE) includesbut not limited to a Mobile Station (MS), a mobile terminal, a mobiletelephone, a handset, a portable equipment or the like in theembodiments of the disclosure. This user equipment may communicate withone or more core networks via the Radio Access Network (RAN), forexample, the user equipment may be a mobile telephone (or called“cellular” telephone), a computer with the wireless communicationfunction, or the like. The user equipment may also be a portable,pocket, handheld, computer built-in or vehicle-carried mobile device.

In the embodiments of the disclosure, the base station (e.g., accesspoint) may mean the device in the access network communicating with thewireless terminal via one or more sectors over the air interface. Thebase station may be used to perform the inter-conversion between thereceived air frame and the IP packet, and used as the router between thewireless terminal and the rest of the access network, where the rest ofthe access network may include Internet Protocol (IP) networks. The basestation may further coordinate the attribute management of the airinterface. For example, the base station may be the Base TransceiverStation (BTS) in the GSM or CDMA, or may be the NodeB in the TD-SCDMA orWCDMA, or may be the evolutional Node B (eNodeB or eNB or e-NodeB) inthe LTE, or may be the gNB in the 5G NR, which is not limited in thedisclosure.

It should be understood that the word such as “first” or “second” in thedescription of the embodiments of the present disclosure is only forpurpose of distinguishing the description, and cannot be construed toindicate or imply the relative importance and cannot be construed toindicate or imply the order either. In the description of theembodiments of the present disclosure, “a plurality of” refers to two ormore.

The term “and/or” in the embodiments of the present disclosure is simplyan association relationship describing the associated objects,indicating that there may be three relationships, for example, A and/orB may represent: only A, both A and B, and only B. Furthermore, thecharacter “I” herein generally indicates that the associated objectshave a kind of “or” relationship.

In the prior art, for a physical uplink shared channel transmission, abase station may send a group of uplink scheduling information for auser equipment, where the uplink scheduling information may include theTPMI, transmit layer indicator, and uplink SRS indicator, etc., and theTPMI and transmit layer indicator or the SRS resource indicator in thegroup of uplink scheduling information is/are used only to indicate theinformation corresponding to one SRS resource set corresponding to thePUSCH, where one SRS resource set is a group of SRS resources and mayinclude one or more SRS resources. This approach limits the flexibilityof uplink scheduling.

Further, in view of the important effect of the Multiple-InputMultiple-Output (MIMO) technology in increasing the peak rate and systemspectrum utilization, the LTE/LTE-A and other wireless access technicalstandards are all established based on the “MIMO+OFDM” technologies,i.e., MIMO combined with Orthogonal Frequency Division Multiplexing. Theperformance gain of the MIMO technology is based on the spatial degreeof freedom obtained by the multi-antenna system, so the most importantevolution direction of the MIMO technology in the standardizationdevelopment process is the dimension expansion.

In the LTE Rel-8, at most 4 layers of MIMO transmission can besupported. The Rel-9 puts emphasis on enhancing the Multi-User MIMO(MU-MIMO) technology, and at most 4 downlink data layers can besupported in the MU-MIMO transmission of the Transmission Mode (TM)-8.The Rel-10 introduces the support of 8 antenna ports, to furtherincrease the spatial resolution of the channel state information andfurther extend the transmission capability of the Single-User MIMO(SU-MIMO) to up to at most 8 data layers. The Rel-13 and Rel-14introduce the Full-Dimension MIMO (FD-MIMO) technology supporting 32ports, to implement the full-dimension and vertical beam-forming.

In order to further improve the MIMO technology, the large-scale antennatechnology is introduced into the mobile communication system. For thebase station, the fully digital large-scale antenna can have up to128/256/512 antenna devices and up to 128/256/512 transceiver devices,where each antenna device is connected to one transceiver device. Thepilot signals of up to 128/256/512 antenna ports are transmitted,allowing the UE to measure channel state information and feed it back.For the UE, the antenna array with up to 32/64 antenna devices can beconfigured. The huge beam-forming gain is obtained through thebeam-formings at the base station and UE sides, to compensate for thesignal attenuation caused by the path loss. Particularly for the highfrequency communication, e.g., at the frequency point of 30 GHz, thepath loss causes the extremely limited coverage range of the wirelesssignal. With the large-scale antenna technology, the coverage range ofthe wireless signal can be extended to the usable range.

In the fully-digital antenna array, each antenna device has anindependent transceiver device, which will greatly increase the size,cost and power consumption of the device. Especially for theAnalog-to-Digital Converter (ADC) and Digital to Analog Converter (DAC)of the transceiver device, the power consumption has only been reducedby about 1/10 and the performance improvement is also relatively limitedin the past ten years. In order to reduce the size, cost, and powerconsumption of the device, an embodiment of the disclosure based onanalog beamforming is proposed. As shown in FIG. 1 and FIG. 2, the mainfeature of analog beamforming is to weight and shape the intermediatefrequency signal (FIG. 1) or radio frequency signal (FIG. 2) through aphase shifter. The advantage is that each transmitting (receiving)antenna has only one transceiver device, which is simple to beimplemented and reduces the cost, size and power consumption.

In order to further improve the performance of analog beamforming, atransceiver architecture scheme of digital-analog hybrid beamforming isproposed. As shown in FIG. 3, there are N_(FF) ^(T) and N_(FF) ^(R)transceiver devices respectively at the transmitting end and thereceiving end, the number of antenna devices at the transmitting end isN^(T), which is greater than N_(RF) ^(T), the number of antenna devicesat the receiving end is N^(R), which is greater than N_(FF) ^(R); andthe maximum number of parallel transmission streams supported bybeamforming is nip n (N_(FF) ^(T), N_(FF) ^(R)). The hybrid beamformingstructure in FIG. 3 balances the flexibility of the digital beamformingand the low complexity of the analog beamforming, and has the ability tosupport the simultaneous forming of a plurality of data streams and aplurality of UEs. At the same time, the complexity is also controlled tobe within a reasonable range.

Both the analog beamforming and the digital-analog hybrid beamformingneed to adjust the analog beamforming weights at the transmitting andreceiving ends to align the resulting beams with their respectiveopposite ends of the communication. For the downlink transmission, thebeamforming weights sent by the base station side and the beamformingweights received by the UE side need to be adjusted, while for theuplink transmission, the beamforming weights sent by the UE side andreceived by the base station side need to be adjusted. The beamformingweights are usually obtained by sending the training signals. In thedownlink direction, the base station sends a downlink beam trainingsignal; and the UE measures the downlink beam training signal, selectsthe best transmission beam of the base station, and feeds back thebeam-related information to the base station, and simultaneously selectsthe corresponding best reception beam and saves it locally.

A UE equipped with a plurality of transmitting antennas can perform theuplink beamforming. In order to determine the uplink UL beamformingmatrix, the UE in the RRC_CONNECTED state can be semi-staticallyconfigured with multiple uplink SRS resources specific to the UE. TheSRS signal transmitted on each SRS resource uses a particularbeamforming matrix for beamforming. The UE sends these SRS resources onthe uplink. The base station (Transmission/Reception Point (TRP))measures the signal quality of different SRS resources and selects thepreferred SRS resource. The TRP sends an index (SRS Resource Indicator(SRI)) of the selected SRS resource to the UE via the Downlink ControlInformation (DCI). The UE can infer which uplink beamforming matrix (forexample, SRS resource) is recommended by the TRP for future uplinktransmission based on the SRI. Then the UE can use the uplinkbeamforming matrix indicated by the SRI for future uplink transmission.

The uplink SRS can also be used to obtain the Channel State Information(CSI). The SRS can be used to estimate the uplink channel information ofeach UE. Based on this, the Channel Quality Indicator (CQI),transmission TPMI, Transmit Rank Indicator (TRI) and other informationof the UE are obtained, so that the base station can determine theresource scheduling of the UE. For the TDD system, in addition to theabove-mentioned functions, by using the reciprocity of the channel, thebase station can also obtain the downlink channel state through the SRS,which provides convenience for downlink transmission. When the basestation configures multiple SRS resources for the UE, the base stationcan indicate the SRS resource selected by the base station to the UEthrough the SRI, helping the UE to determine the antenna andtransmitting precoding corresponding to the uplink transmission, thereceiving precoding corresponding to the downlink transmission, etc. Theprecoding here can be digital beamforming/precoding, or analogbeamforming/precoding, or digital-analog hybrid beamforming/precoding.

For example, when the uplink transmission is codebook-based uplinktransmission, the base station can configure an SRS resource setcontaining multiple SRS resources for the UE to acquire the uplink CSI,where each SRS resource can contain one or more antenna ports. The UEsends the corresponding SRS according to the configuration informationof the SRS resource sent by the base station. The base station sends theSRI, TPMI and TRI information to the UE according to the received SRS.According to the SRI, the UE can determine the SRS resource selected bythe base station, and thus determine that the uplink transmission usesthe same antenna, antenna port and analog beamforming as the SRStransmission corresponding to the SRS resource. Through the TPMI and TRIinformation of the SRS resource corresponding to the SRI, the UE canfurther determine the precoding matrix and the number of transmissionstreams of the uplink transmission.

For another example, when the uplink transmission is non-codebook-baseduplink transmission, the base station may configure an SRS resource setcontaining multiple SRS resources for the UE to acquire the uplink CSI,where each SRS resource contains 1 antenna port. The base stationindicates the SRS resources selected by the base station to the UEthrough the SRI. According to the SRI, the UE can determine that theuplink transmission uses the same precoding as that used for sending theSRS corresponding to the SRS resources indicated by the SRI. The numberof SRS resources indicated by the SRI is equal to the number of streamsof the uplink transmission.

Currently, the UE may have a plurality of antenna panels (also calledantenna arrays) for uplink transmission. Each antenna panel consists ofa group of antenna devices (including one or more antenna devices). Theexact number of antenna panels, the number of antenna devices, and thearrangement of antenna devices in each panel are implementation issues,and different UEs can have different implementations. The UE can sendone data layer from one panel at a time, or the UE can send one datalayer from a plurality of antenna panels at the same time. When thistransmission method for data layer is applied to the SRS transmission,the UE can send one SRS port at a time from one panel, or the UE cansend one SRS port from multiple antenna panels at the same time. In theprior art, the UE can use a plurality of antenna panels to perform thedata transmission simultaneously during uplink transmission, but it isimpossible for the base station to distinguish whether the UE uses aplurality of antenna panels for transmission, so the base station cannotindicate the uplink scheduling information (such as precoding matrix,sending amplitude, etc.) independently for each antenna panel of the UE,which greatly limits the performance of the uplink transmission of theUE.

In Embodiments of the present disclosure provide an uplink transmissionmethod, which can be applicable to the case where one data layer of thephysical uplink shared channel transmitted by one or more panels of theUE. N1 represents the number of physical antenna panels of the UE. FIG.4 is a schematic diagram of the PUSCH transmission when N1=2, in whichthe data layers 1 . . . L can be sent respectively through the antennapanel 1 and the antenna panel 2. Although FIG. 4 uses N1=2 as an exampleto illustrate the solution, it should be understood that the embodimentsof the present disclosure can be extended to the cases where there aremore than two antenna panels.

Referring to FIG. 5, an embodiment of the present disclosure provides anuplink transmission method, including as follows.

S101, a base station instructing a UE to send SRSs corresponding to Ngroups of SRS resources, where each group of SRS resources includes oneor more SRS resources, and N is a positive integer greater than 1.

Correspondingly, the UE receives the configuration information of Muplink SRS resources indicated by the base station, and uses N groups ofSRS resources among the M uplink SRS resources to send the SRSs based onthe configuration information; where the M SRS resources can be dividedinto N SRS resource groups, and a group of SRS resources is composed ofone or more SRS resources among the M SRS resources.

In some embodiments of the present disclosure, one group of SRSresources may correspond to one SRS resource set, and one SRS set mayinclude one or more SRS resources.

The base station can configure N SRS resource sets corresponding to thePUSCH for the user terminal. For example, a configuration method thatcan correspond to the 3GPP protocol is: the parameter txConfig in thehigh-level parameter PUSCH-Config is configured as ‘codebook’ (or‘nonCodebook’), and the usage in the high-level parameterSRS-ResourceSet corresponding to N SRS resource sets is configured as‘codebook’ (or ‘nonCodebook’), and each SRS resource set corresponds toa group of SRS resources.

Further, the base station may instruct the user terminal to send theSRSs corresponding to the N SRS resource sets. Here, for periodic SRSresources, the UE sends the SRSs periodically as long as it receives theconfiguration information; for non-periodic SRS resources orsemi-persistent SRS resources, the US can be instructed by the basestation to send the SRSs through the trigger signaling or activationsignaling.

In some embodiments of the present disclosure, the UE may have aplurality of antenna panels, and the SRSs may be sent by the UE by usingthe plurality of antenna panels, where the UE may use different groupsof antenna panels to send SRSs on different groups of SRS resources.

In a specific implementation process, which antenna panel of the UEtransmits which group of SRS resources may be an implementation problemof the UE, and may be transparent to the base station, that is, the basestation may not know which antenna panel the UE uses to transmit whichgroup of SRS resources. The UE may also indicate the correspondencebetween the antenna panels used by the UE and the SRS resources to thebase station through signaling, or the base station may indicate thecorrespondence between the SRS resources and the antenna panels of theUE through signaling.

S102, the base station receiving the SRSs sent by the UE and determiningX groups of uplink scheduling information; where each group of uplinkscheduling information corresponds to one of the N groups of SRSresources, different groups of uplink scheduling information correspondto different ones of the N groups of SRS resources, and X is a positiveinteger greater than 1 and not greater than N.

In a specific implementation process, the X groups of uplink schedulinginformation may be included in the uplink grant (UL grant) information.

S103, the base station sending the X groups of uplink schedulinginformation to the UE for the UE performing the uplink signaltransmission according to the X groups of uplink scheduling information.

Correspondingly, the UE receives the X groups of uplink schedulinginformation sent by the base station, and controls the uplinktransmission corresponding to each group of SRS resources based on thecorrespondence between SRS resource groups and uplink schedulinginformation.

Further, when the UE uses different groups of antenna panels to sendSRSs on different groups of SRS resources and after the UE receives theX groups of uplink scheduling information sent by the base station, theUE may further determine the uplink scheduling information correspondingto each antenna panel based on the correspondence between SRS resourcegroups and antenna panels as well as the correspondence between SRSresource groups and uplink scheduling information, where one of the Xgroups of uplink scheduling information corresponds to one antenna panelof the UE, and control the antenna panel corresponding to each group ofuplink scheduling information to perform the uplink transmission basedon the each group of uplink scheduling information.

In the above solution, the base station instructs the UE to send theSRSs corresponding to N groups of SRS resources, then determines Xgroups of uplink scheduling information based on the received SRSs sentby the UE, and sends the determined X groups of uplink schedulinginformation to the UE, where each group of uplink scheduling informationcorresponds to one of the N groups of SRS resources, and differentgroups of uplink scheduling information correspond to different groupsof SRS resources, so that the UE can perform, after receiving the Xgroups of uplink scheduling information, according to each group ofuplink scheduling information, the uplink signal transmission by usingthe uplink transmission characteristics of the SRS transmissioncorresponding to the each group of uplink scheduling information,improving the flexibility of uplink scheduling.

Also, when the UE uses different antenna panels to send the SRSs ondifferent groups of SRS resources, the base station determines, afterdetermining the uplink scheduling information corresponding to each ofreceived groups of SRS resources, respectively according to the SRS ofthis group of SRS resources, different groups of SRS resourcescorresponding to different groups of uplink scheduling information, andthen the effect of indicating the uplink scheduling informationindependently for the antenna panel corresponding to each group of SRSresources, is implemented by indicating the uplink schedulinginformation separately to each group of SRS resources, increasing theflexibility of uplink scheduling and improving the performance of uplinktransmission of the UE.

In one embodiment, after the base station instructs the UE to send theSRSs corresponding to the N groups of SRS resources, the base stationsends the correspondence information between the X groups of uplinkscheduling information and a plurality of antenna panels of the UE.

Here, the correspondence information may be: different groups of uplinkscheduling information correspond to different antenna panels; or atleast two different groups of uplink scheduling information correspondto the same antenna panel; or the correspondence between uplinkscheduling information and antenna panels of the UE; or different groupsof SRS resources correspond to different antenna panels; or at least twodifferent groups of SRS resources correspond to the same antenna panel;or indicating the correspondence between each group of SRS resources ofthe UE and antenna panels of the UE.

In this embodiment, the base station sends the correspondenceinformation between the X groups of uplink scheduling information and aplurality of antenna panels of the UE to the UE, so that the UE cantransmit uplink signals based on the correspondence, increasing theflexibility of uplink scheduling and improving the performance of uplinktransmission of the UE.

In one embodiment, the X groups of uplink scheduling information may beincluded in the DCI or Radio Resource Control (RRC) information.

This embodiment saves the signaling overhead of the communication systemand improves the user experience.

In one embodiment, if X<N, the DCI may also contain the informationabout the SRS resource groups corresponding to X groups of uplinkscheduling information selected from N groups of SRS resources.

This embodiment increases the flexibility of uplink scheduling, savesthe signaling overhead of the communication system and improves the userexperience.

In one embodiment, a signaling carrying the uplink schedulinginformation does not contain a SRI of the SRS resource corresponding tothe uplink scheduling information. This embodiment increases theflexibility of uplink scheduling and improves the user experience.

In one embodiment, at least one of the X groups of uplink schedulinginformation contains indication information indicating that the at leastone group of uplink scheduling information is not used for the uplinksignal transmission.

Correspondingly, the corresponding UE-side behavior includes: thetransmission of uplink signals (such as PUSCH, PUCCH, etc.) does notcorrespond to the SRS resources corresponding to these uplink schedulinginformation not used for the uplink signal transmission. That is, theSRS resources used to determine the related information (such asinformation on precoding and/or transmission stream number) of theuplink signal transmission do not include these SRS resourcescorresponding to these uplink scheduling information, and the precodingmatrices used to determine the uplink signal transmission does notinclude the precoding matrices indicated by these uplink schedulinginformation.

Furthermore, the UE does not use the antenna panels corresponding tothese SRS resources when sending uplink signals.

This embodiment increases the flexibility of uplink scheduling andimproves the user experience.

In one embodiment, before the base station determines the X groups ofuplink scheduling information, the method further includes: the basestation agrees on the value of X with the UE.

Here, the agreement mode may be protocol agreement, or may be sending asignaling by the base station to the UE to indicate the X.

For example, the protocol agrees that X=N.

For example, the protocol agrees that X is equal to the number of SRSresource sets configured by the base station for the UE.

For example, the base station sends a limit signaling of the maximumnumber of SRS resources to the UE.

For example, the base station sends a limit signaling of the maximumnumber of SRS resource sets to the UE.

For example, the base station sends an indication signaling of thenumber of SRS resource groups to the UE.

For example, the base station sends an indication signaling of thenumber of uplink scheduling information groups to the UE.

This embodiment increases the flexibility and reliability of uplinkscheduling and improves the user experience.

In one embodiment, after the base station receives the SRSs sent by theUE, the method further includes: the base station sends the resource setindication information to the UE, where the SRS resource set indicationinformation indicates an SRS resource set corresponding to the uplinkscheduling information.

In a specific implementation process, the SRS resource set indicationinformation may be sent in the same DCI as the X groups of uplinkscheduling information, or in a different DCI.

In this embodiment, the base station indicates the resource set foruplink transmission for each antenna panel by sending the SRS resourceset indication information to the UE, increasing the flexibility andreliability of uplink scheduling and improving the user experience.

In one embodiment, the correspondence between the X groups of uplinkscheduling information and the N SRS resources is a correspondencepre-agreed by the base station and the UE.

In this embodiment, the base station pre-agrees the correspondencebetween the X groups of uplink scheduling information and the N SRSresources, then indicates the uplink scheduling information separatelyto each group of SRS resources based on this correspondence, and thenindicates the uplink scheduling information independently for eachantenna panel of the UE, increasing the flexibility of uplink schedulingand improving the performance of uplink transmission of the UE.

In one embodiment, after receiving the SRSs sent by the UE, the basestation may further determine the relative relationship(s) among some orall of the X groups of uplink scheduling information, and indicate therelative relationship(s) among some or all groups of uplink schedulinginformation to the UE.

In a specific implementation process, the relative relationship(s) amongsome or all of the X groups of uplink scheduling information may beincluded in the X groups of uplink scheduling information.

In a specific implementation process, the relative relationship mayspecifically include phase rotation and/or amplitude scaling.Correspondingly, the UE scales the sending amplitude of each antennapanel according to the amplitude scaling and then performs the PUSCHtransmission, and/or rotates the phase of each antenna panel accordingto the phase rotation and then performs the PUSCH transmission.

In a specific implementation process, the amplitude scaling and/or phaserotation information may specifically be the amplitude scaling and/orphase rotation of each antenna panel relative to a reference antennapanel.

Here, the amplitude scaling can be an independent field in the UL grantinformation. Taking N1=2 as an example, the base station may send anamplitude scaling factor to the UE to indicate the amplitude scaling ofthe antenna panel 2 relative to the antenna panel 1. For example, theamplitude scaling factor indicates that, when the UE performs the PUSCHtransmission, the power of data that needs to be sent on the antennapanel 2 is 4 times the power of the data sent on the antenna panel 1.Similarly, the phase rotation signaling can also be an independent fieldin the UL grant information.

In a specific implementation process, the amplitude scaling and/or phaserotation information is included in the antenna panel-specificscheduling information of other antenna panels except the referenceantenna panel.

In a specific implementation process, the amplitude scaling and/or phaserotation signaling takes the form of precoding among antenna panels. Forexample, the base station may send a TPMI_antenna panel indicationinformation (i.e., indication information related to TPMI) to the UE toindicate the amplitude scaling and/or phase rotation relationship amongthe antenna panels. Taking N1=2 as an example, assuming that theprecoding indicated by the TPMI_antenna panel indication informationsent by the base station to the UE is

$\begin{bmatrix}1 \\j\end{bmatrix},$

it means that the UE uses, when PUSCH is transmitted on the antennapanel 1, the precoding matrix indicated by the TPMI indicated in theantenna panel-specific scheduling information corresponding to theantenna panel 1 to pre-code, and when the PUSCH is transmitted on theantenna panel 2, it is necessary to multiply every element of theprecoding matrix indicated by the TPMI indicated in the antennapanel-specific scheduling information corresponding to the antenna panel2 by a factor j as the precoding of the antenna panel 2.

In this embodiment, the base station can indicate the relativerelationship(s) (such as phase rotation and/or amplitude scaling, etc.)among some or all of the X groups of uplink scheduling information foreach antenna panel of the UE, so that the UE scales the sendingamplitude of each antenna panel according to the amplitude scaling andthen performs the PUSCH transmission, and/or rotates the phase of eachantenna panel according to the phase rotation and then performs thePUSCH transmission. This embodiment further increases the flexibility ofuplink scheduling and improves the performance of uplink transmission ofthe UE.

In one embodiment, the base station sends the determined X groups ofuplink scheduling information to the UE, which specifically includes:the base station determines the bit width of the X groups of uplinkscheduling information in the DCI, generates the DCI, and sends thedetermined X groups of uplink scheduling information to the UE throughthe DCI.

Correspondingly, after receiving the DCI sent by the base station, theUE determines the bit width of the X groups of uplink schedulinginformation in the DCI, and decodes the DCI according to the bit widthof the X groups of uplink scheduling information in the DCI to obtainthe X groups of uplink scheduling information.

In a specific implementation process, for different transmission modes,the content included in each group of uplink scheduling information canbe different. For example, in the codebook-based transmission mode, theX groups of uplink scheduling information can include the TPMI and/ortransmit layer indicator corresponding to each group of SRS resources.The TPMI and/or transmit layer indicator is, for example, the field ofPrecoding information and number of layers in the DCI in 3GPP TS38.212.In the non-codebook-based transmission mode, the X groups of uplinkscheduling information can include the SRI and/or transmit layerindicator corresponding to each group of SRS resources. The two caseswill be respectively introduced below in detail.

(1) In the codebook-based transmission mode, the X groups of uplinkscheduling information include the TPMI and/or transmit layer indicatorcorresponding to each group of SRS resources.

In this case, the base station may determine the bit width of the Xgroups of uplink scheduling information in the DCI according to thenumber of antenna ports contained in SRS resources corresponding to theX groups of uplink scheduling information.

For example, the base station determines the bit width of the kt^(h) oneof the X groups of uplink scheduling information in the DCI according tothe number of antenna ports contained in SRS resources in a group of SRSresources corresponding to the k^(th) group of uplink schedulinginformation, and k is an integer greater than or equal to 1 and lessthan or equal to X.

In specific implementation processes, the X groups of uplink schedulinginformation can indicate the TPMI and/or transmit layer indicatorcorresponding to each group of SRS resources in different ways. Thespecific indication ways include but not limited to the following threeways.

In a first way: each group of SRSs sent by the UE corresponds to one SRSresource, and different ones of the X groups of uplink schedulinginformation correspond to different SRS resources; and the schedulinginformation of each of X SRS resources corresponding to the X groups ofuplink scheduling information, includes the TPMI and transmit layerindicator of each SRS resource, where the numbers of transmissionstreams indicated by all of the X groups of uplink schedulinginformation may be the same or different, which is not specificallylimited in the embodiments of the present disclosure.

In a specific implementation process, the scheduling information of eachof X SRS resources corresponding to the X groups of uplink schedulinginformation can be independently encoded in the DCI or jointly encodedin the DCI, which is not specifically limited in the embodiments of thepresent disclosure.

When the scheduling information of each of X SRS resources correspondingto the X groups of uplink scheduling information is independentlyencoded in the DCI, the step in which the base station determines thebit width of the X groups of uplink scheduling information in the DCIaccording to the number of antenna ports contained in SRS resourcescorresponding to the X groups of uplink scheduling information includes:the base station determines the bit width of the TPMI and transmit layerindicator corresponding to each of the X SRS resources, according to thenumber of antenna ports contained in the SRS resource; or the basestation determines the bit width of the TPMI and transmit layerindicator corresponding to each SRS resource, according to the maximumamong the numbers of antenna ports contained in all of the X SRSresources; or the base station determines the bit widths of the TPMI andtransmit layer indicator, each corresponding to the number of antennaports of each of the X SRS resources, according to the number of antennaports contained in the each of the X SRS resources, and takes themaximum among all the determined bit widths as the bit width of the TPMIand transmit layer indicator corresponding to each SRS resource. The bitwidth(s) of the TPMI and transmit layer indicator means that the bitwidth(s) of the field of Precoding information and number of layers inthe DCI.

When the scheduling information of each of X SRS resources correspondingto the X groups of uplink scheduling information is jointly encoded inthe DCI, the step in which the base station determines the bit width ofthe X groups of uplink scheduling information in the DCI, according tothe number of antenna ports contained in SRS resources corresponding tothe X groups of uplink scheduling information includes: the base stationdetermines the total bit width of the TPMIs and transmit layerindicators corresponding to all the SRS resources, according to the sumof possible values of the TPMIs and the numbers of transmission streamsunder the numbers of antenna ports contained in all the SRS resources;or the base station determines the total bit width of the TPMIs andtransmit layer indicators corresponding to all the SRS resources,according to the maximum among the possible values of the TPMIs and thenumbers of transmission streams under the numbers of antenna portscontained in all the SRS resources; or the base station determines thetotal bit width of the TPMIs and transmit layer indicators correspondingto all the SRS resources, according to the possible values of the TPMIsand the numbers of transmission streams under the maximum among thenumbers of antenna ports contained in all the SRS resources.

For example, taking N1=2 as an example, it is assumed that the basestation configures two SRS resources for CSI acquisition for the UE,where the first SRS resource includes P1 SRS ports and the second SRSresource includes P2 SRS ports. Then the bit width of the TPMI and TRIindication information corresponding to the first SRS resource is thebit width of the TPMI and TRI indication information under the codebookcorresponding to P1 antenna ports, and the bit width of the TPMI and TRIindication information corresponding to the second SRS resource is thebit width of the TPMI and TRI indication information under the codebookcorresponding to P2 antenna ports. This can be expressed by formula as:assuming that the possible value of the TPMI and TRI corresponding tothe number of SRS ports contained in the m^(th) SRS resource is R_(m),and the bit width of the TPMI and TRI corresponding to the m^(th) SRSresource is ┌log₂ (R_(m))┐ bits, then the total bit width of the TPMIsand TRIs is

$\sum\limits_{m = 1}^{M}\left\lceil {\log_{2}\left( R_{m} \right)} \right\rceil$

bits. After determining the bit width of the TPMI and TRI, the basestation encodes the TPMI and TRI under the bit width and instructs theUE.

For example, it is assumed that the bit width of the TPMI and TRIcorresponding to the number of SRS ports contained in m^(th) SRSresources is Om bits, and the total bit width of the TPMIs and TRIs is

$M \times {\max\limits_{1 \leq m \leq M}\left( O_{m} \right)}$

bits. Still taking N1=2 as an example, it is assumed that the basestation configures two SRS resources for CSI acquisition for the UE,where the first SRS resource includes P1 SRS ports, the second SRSresource includes P2 SRS ports, P1>P2, and the bit width (O₁ bits) ofthe TPMI and TRI under the codebook corresponding to P1 is greater thanthe bit width (02 bits) of the TPMI and TRI under the codebookcorresponding to P2. Then the TPMI and TRI corresponding to the firstSRS resource is the bit width (O₁ bits) of the TPMI and TRI under thecodebook corresponding to P1 antenna ports, and the TPMI and TRIcorresponding to the second SRS resource is also the bit width (O₁ bits)of the TPMI and TRI under the codebook corresponding to P1 antennaports. Then the total bit width of the TPMIs and TRIs is 2*O₁ bits. Thiscan be expressed by formula as: assuming that the possible value of theTPMI and TRI corresponding to the number of SRS ports contained in them^(th) SRS resource is R_(m) and the bit width of the TPMI and TRIcorresponding to the m_(th) SRS resource is ┌log₂ (R_(m))┐ bits, thenthe total bit width of the TPMIs and TRIs is

$M \times {\max\limits_{1 \leq m \leq M}\left\lceil {\log_{2}\left( R_{m} \right)} \right\rceil}$

bits. Another way is that the total bit width of the TPMIs and TRIs is afunction of the maximum possible value of the TPMIs and TRIscorresponding to all SRS resources, for example,

$M \times \left\lceil {\log_{2}\left( {\max\limits_{1 \leq m \leq M}\left( R_{m} \right)} \right)} \right\rceil$

bits. After determining the bit width of the TPMI and TRI, the basestation encodes the TPMI and TRI under the bit width and instructs theUE.

For example, assuming that the bit width of the TPMI and transmit layerindicator is determined, by the UE, as ┌log₂ (R_(sum))┐ bits accordingto the sum of possible value of the TRMI (R_(sum)) under the number ofSRS ports contained in each SRS resource. Another bit width of the TPMIand TRI is the bit width determined according to the maximum number ofpossible values of the TPMI and TRI under the number of SRS portscontained in each SRS resource. For example, assuming that the possiblevalue of the TPMI and TRI corresponding to the number of SRS portscontained in the m_(th) SRS resource is R_(m), then the total bit widthof the TPMIs and TRIs is

$\left\lceil {\log_{2}\left( {M\;{\max\limits_{1 \leq m \leq M}\left( R_{m} \right)}} \right)} \right\rceil$

bits. After determining the bit width of the TPMI and TRI, the basestation encodes the TPMI and TRI under the bit width and instructs theUE.

Correspondingly, the UE determines the bit width of the TPMI and TRI inthe same way, and decodes the TPMI and TRI in the corresponding decodingway to obtain the precoding matrix and the number of transmissionstreams corresponding to each antenna panel. According to the TPMI andTRI indicated by the uplink scheduling information as well as the SRSresource corresponding to the uplink scheduling information, the UEdetermines that the PUSCH corresponds to the precoding and the number oftransmission streams of the data stream corresponding to the uplinkscheduling information. The UE integrates all uplink schedulingindication information to determine the total precoding and transmissionstream of the PUSCH, and then performs the PUSCH transmission.

It should be noted that the above-mentioned TPMI and TRI indicatorindication information can be independently encoded, that is, the TPMIis carried in an independent information field or parameter, andtransmit layer indicator is carried in another independent informationfield or parameter; or it can be jointly encoded, that is, the TPMI andTRI are carried by the same information field or the same parameter.

In a second way: each group of SRSs sent by the UE corresponds to oneSRS resource, and different ones of the X groups of uplink schedulinginformation correspond to different SRS resources; and the schedulinginformation of each of X SRS resources corresponding to X groups ofuplink scheduling information includes the TPMI of each SRS resource.

The number of transmission streams of each antenna panel can beseparately indicated by the base station to the UE. For example, inaddition to X groups of scheduling information, the UL grant informationmay further include the independent transmission stream numberindication information, which may be determined by the base stationaccording to the SRSs sent by the UE after the base station receives andmeasures the SRSs sent by the UE based on the instruction. Thistransmission stream number indication information may indicate that allSRS resources correspond to the same number of transmission streams.

In a specific implementation process, the scheduling information of eachof X SRS resources corresponding to the X groups of uplink schedulinginformation can be independently encoded in the DCI or jointly encodedin the DCI, which is not specifically limited in the embodiments of thepresent disclosure.

When the scheduling information of each of X SRS resources correspondingto the X groups of uplink scheduling information is independentlyencoded in the DCI, the step in which the base station determines thebit width of the X groups of uplink scheduling information in the DCIaccording to the number of antenna ports contained in SRS resourcescorresponding to the X groups of uplink scheduling information includes:the base station determines the bit width of the TPMI corresponding toeach of the X SRS resources, according to the number of antenna portscontained in the SRS resource; or the base station determines the bitwidth of the TPMI corresponding to each SRS resource, according to themaximum among the numbers of antenna ports contained in all of the X SRSresources; or the base station determines the bit widths of the TPMI,each corresponding to the number of antenna ports of each of the X SRSresources, according to the number of antenna ports contained in theeach of the X SRS resources, and takes the maximum among all thedetermined bit widths as the bit width of the TPMI corresponding to eachSRS resource.

When the scheduling information of each of X SRS resources correspondingto the X groups of uplink scheduling information is jointly encoded inthe DCI, the step in which the base station determines the bit width ofthe X groups of uplink scheduling information in the DCI according tothe number of antenna ports contained in SRS resources corresponding tothe X groups of uplink scheduling information includes: the base stationdetermines the total bit width of the TPMIs corresponding to all the SRSresources according to the sum of possible values of the TPMIs and thenumbers of transmission streams under the numbers of antenna portscontained in all the SRS resources; or the base station determines thetotal bit width of the TPMIs corresponding to all the SRS resourcesaccording to the maximum among the possible values of the TPMIs and thenumbers of transmission streams under the numbers of antenna portscontained in all the SRS resources; or the base station determines thetotal bit width of the TPMIs corresponding to all the SRS resourcesaccording to the possible values of the TPMIs and the numbers oftransmission streams under the maximum among the numbers of antennaports contained in all the SRS resources.

For example, the number of antenna panels is represented by N1. AssumingN1=4, in the codebook under 4 antennas, there are L1 precoding matricescorresponding to the transmission with 1-layer (i.e., RI=1), L2precoding matrices corresponding to the transmission with 2-layer (i.e.,RI=2), L3 precoding matrices corresponding to the transmission with3-layer (i.e., RI=3), and L4 precoding matrices corresponding to thetransmission with 4-layer (i.e., RI=4), where max(L1, L2, L3, L4)=L1,and the bit width of the TPMI corresponding to the number of SRS ports(Pm) contained in the mt^(h) SRS resource is determined according to L1.For example, the bit width of the TPMI corresponding to the number ofSRS ports (Pm) contained in the m^(th) SRS resource is ┌log₂ (L₁)┐ bits.After determining the bit width of the TPMI, the base station encodesthe TPMI under the bit width to generate the TPMI indication signaling,and instruct it to the UE.

For example, it is assumed that the bit width of the TPMI correspondingto the number of SRS ports contained in m^(th) SRS resources is Om bits,then the bit width of the TPMI corresponding to each SRS resource is

$\max\limits_{1 \leq m \leq M}\left( O_{m} \right)$

bits, and the total bit width of the TPMIs and TRIs is

$M \times {\max\limits_{1 \leq m \leq M}\left( O_{m} \right)}$

bits. This can be expressed by formula as: assuming that the possiblevalue of the TPMI corresponding to the number of SRS ports contained inthe m^(th) SRS resource is R_(m), and the bit width of the TPMIcorresponding to the m^(th) SRS resource is ┌log₂ (R_(m))┐ bits, thenthe total bit width of the TPMIs is

$M \times {\max\limits_{1 \leq m \leq M}\left\lceil {\log_{2}\left( R_{m} \right)} \right\rceil}$

bits. Another way is that the total bit width of the TPMIs is a functionof the maximum possible value of the TPMIs corresponding to all SRSresources, for example,

$M \times \left\lceil {\log_{2}\left( {\max\limits_{1 \leq m \leq M}\left( R_{m} \right)} \right)} \right\rceil$

bits. In one embodiment, the bit width of the TPMI corresponding to thenumber of SRS ports (Pm) contained in the m^(th) SRS resource isdetermined according to the maximum number of the precoding matricescorresponding to each rank transmission in the codebook under N1 antennapanels. After determining the bit width of the TPMI, the base stationencodes the TPMI under the bit width to generate the TPMI indicationsignaling, and instruct it to the UE.

For example, the bit width determined by the base station according tothe sum (R_(sum)) of the possible values of TPMIs under the number ofSRS ports contained in each SRS resource is ┌log₂ (R_(sum))┐ bits.Another way is that the bit width of the TPMI is determined according tothe maximum number of possible values of the TPMI under the number ofSRS ports contained in each SRS resource. Assuming that the possiblevalue of the TPMI corresponding to the number of SRS ports contained inthe m^(th) SRS resource is Rm, then the total bit width of the TPMIs is

$\left\lceil {\log_{2}\left( {M\;{\max\limits_{1 \leq m \leq M}\left( R_{m} \right)}} \right)} \right\rceil$

bits. In one embodiment, the number of possible values of the TPMIcorresponding to the number of SRS ports (Pm) contained in the m^(th)SRS resource is the maximum number of the precoding matricescorresponding to each rank transmission in the codebook under N1 antennapanels. After determining the bit width of the TPMI, the base stationencodes the TPMI under the bit width to generate the TPMI indicationsignaling, and instruct it to the UE.

Correspondingly, the UE determines the bit width of the TPMI in the sameway, and decodes the TPMI in the corresponding decoding way to obtainthe precoding matrix and the number of transmission streamscorresponding to each antenna panel. According to the TPMI and TRIindicated by the uplink scheduling information as well as the SRSresource corresponding to the uplink scheduling information, the UEdetermines that the PUSCH corresponds to the precoding and the number oftransmission streams of the data stream corresponding to the uplinkscheduling information. The UE integrates all uplink schedulingindication information to determine the total precoding and transmissionstream of the PUSCH, and then performs the PUSCH transmission.

In a third way: each group of SRSs sent by the UE corresponds to one SRSresource, and different ones of the X groups of uplink schedulinginformation correspond to different SRS resources; the schedulinginformation of one of X SRS resources corresponding to X groups ofuplink scheduling information includes the TPMI and transmit layerindicator of the one SRS resource, and the scheduling information ofeach of the remaining X-1 SRS resources includes the TPMI of the SRSresource. The transmit layer indicator included in the schedulinginformation of the one SRS resource indicates the number of transmissionstreams of each of the X SRS resources simultaneously.

In a specific implementation process, the scheduling information of eachof X SRS resources corresponding to the X groups of uplink schedulinginformation can be independently encoded in the DCI or jointly encodedin the DCI, which is not specifically limited in the embodiments of thepresent disclosure.

When the scheduling information of each of the X SRS resourcescorresponding to the X groups of uplink scheduling information isindependently encoded in the DCI, the step in which the base stationdetermines the bit width of the X groups of uplink schedulinginformation in the DCI according to the number of antenna portscontained in SRS resources corresponding to the X groups of uplinkscheduling information includes:

the base station determines the bit width of the TPMI and transmit layerindicator of the one SRS resource according to the maximum among thenumbers of antenna ports contained in all the SRS resources; anddetermines the bit width of the TPMI indication informationcorresponding to each of the remaining X-1 SRS resources according tothe number of antenna ports contained in the SRS resource; or

the base station determines the bit width of the TPMI and transmit layerindicator of the one SRS resource according to the number of antennaports contained in the one SRS resource; and determines the bit width ofthe TPMI indication information corresponding to each of the remainingX-1 SRS resources according to the number of antenna ports contained inthe SRS resource; or

the base station determines the bit width of the TPMI and transmit layerindicator of the one SRS resource according to the maximum among thenumbers of antenna ports contained in all the SRS resources; anddetermines the bit width of the TPMI indication informationcorresponding to each of the remaining X-1 SRS resources according tothe maximum among the numbers of antenna ports contained in all the SRSresources; or

the base station determines the bit width of the TPMI and transmit layerindicator of the one SRS resource according to the number of antennaports contained in the one SRS resource; and determines the bit width ofthe TPMI indication information corresponding to each of the remainingX-1 SRS resources according to the maximum among the numbers of antennaports contained in all the SRS resources; or

the base station determines the bit width of the TPMI and transmit layerindicator of the one SRS resource according to the maximum among thenumbers of antenna ports contained in all the SRS resources; anddetermines the bit widths of the TPMI, each corresponding to the numberof antenna ports of each of the X SRS resources, according to the numberof antenna ports contained in the each of the X SRS resources, and takesthe maximum value thereof as the bit width of the TPMI corresponding toeach of the remaining X-1 SRS resources; or

the base station determines the bit width of the TPMI and transmit layerindicator of the one SRS resource, according to the number of antennaports contained in the one SRS resource; and determines the bit widthsof the TPMI, each corresponding to the number of antenna ports of eachof the X SRS resources, according to the number of antenna portscontained in the each of the X SRS resources, and takes the maximumvalue thereof as the bit width of the TPMI corresponding to each of theremaining X-1 SRS resources; or

the base station determines the bit widths of the TPMI and the bit widthof the transmit layer indicator, each corresponding to the number ofantenna ports of the each of X SRS resources, according to the number ofantenna ports contained in the each of the X SRS resources, takes themaximum among the bit widths of the transmit layer indicators as the bitwidth of the transmit layer indicator of the one SRS resource, and takesthe maximum among the bit widths of the TPMI indication information asthe bit width of the TPMI corresponding to each of the X SRS resources;or

the base station determines the bit widths of the TPMI, eachcorresponding to the number of antenna ports of each of X SRS resources,as well as the jointly-encoded bit widths of the TPMI and transmit layerindicator, each corresponding to the number of antenna ports of each ofX SRS resources, according to the number of antenna ports contained inthe each of the X SRS resources, takes the maximum among thejointly-encoded bit widths of the TPMIs and transmit layer indicators asthe bit width of the transmit layer indicator of the one SRS resource,and takes the maximum among the bit widths of the TPMI indicationinformation as the bit width of the TPMI corresponding to each of the XSRS resources; or

the base station determines the bit width of the TPMI and transmit layerindicator of the one SRS resource, according to the maximum among thenumbers of antenna ports contained in all the SRS resources; and foreach of the remaining X-1 SRS resources, determines the bit width of theTPMI corresponding to the SRS resource, according to the number oftransmission streams and the number of antenna ports contained in theSRS resource; or

the base station determines the bit width of the TPMI and transmit layerindicator of the one SRS resource, according to the number of antennaports contained in the one SRS resource; and for each of the remainingX-1 SRS resources, determines the bit width of the TPMI corresponding tothe SRS resource, according to the number of transmission streams andthe number of antenna ports contained in the SRS resource; or

the base station determines the bit width of the TPMI and transmit layerindicator of the one SRS resource, according to the maximum among thenumbers of antenna ports contained in all the SRS resources; and foreach of the remaining X-1 SRS resources, determines the bit widths ofthe TPMIs corresponding to other SRS resources, according to the numberof transmission streams and the maximum among the numbers of antennaports contained in all the SRS resources; or

the base station determines the bit width of the TPMI and transmit layerindicator of the one SRS resource, according to the number of antennaports contained in the one SRS resource; and for each of the remainingX-1 SRS resources, determines the bit widths of the TPMIs correspondingto other SRS resources, according to the number of transmission streamsand the maximum among the numbers of antenna ports contained in all theSRS resources; or

the base station determines the bit width of the TPMI and transmit layerindicator of the one SRS resource, according to the maximum among thenumbers of antenna ports contained in all the SRS resources; and foreach of the remaining X-1 SRS resources, determines the bit widths ofthe TPMI, each corresponding to the number of antenna ports of each of XSRS resources, according to the number of transmission streams and thenumber of antenna ports contained in the each of the X SRS resources,and takes the maximum value thereof as the bit width of the TPMIcorresponding to the SRS resource; or

the base station determines the bit width of the TPMI and transmit layerindicator of the one SRS resource, according to the number of antennaports contained in the one SRS resource; and for each of the remainingX-1 SRS resources, determines the bit widths of the TPMI, eachcorresponding to the number of antenna ports of each of X SRS resources,according to the number of transmission streams and the number ofantenna ports contained in the each of the X SRS resources, and takesthe maximum value thereof as the bit width of the TPMI corresponding tothe SRS resource; or

the base station determines the bit widths of the transmit layerindicator and the bit widths of the TPMI during single-streamtransmission, each corresponding to the number of antenna ports of eachof X SRS resources, according to the number of antenna ports containedin the each of the X SRS resources, takes the maximum among all thedetermined bit widths of the transmit layer indicators as the bit widthof the transmission stream number of the one SRS resource, and takes themaximum among all the determined bit widths of the TPMIs as the bitwidth of the TPMI corresponding to each of the remaining X-1 SRSresources; or

the base station determines the bit widths of the TPMI duringsingle-stream transmission, each corresponding to the number of antennaports of each of X SRS resources, as well as the jointly-encoded bitwidths of the TPMI and transmit layer indicator, each corresponding tothe number of antenna ports of each of X SRS resources, according to thenumber of antenna ports contained in the each of the X SRS resources,takes the maximum among all the determined jointly-encoded bit widths ofthe TPMIs and transmit layer indicators as the bit width of the transmitlayer indicator of the one SRS resource, and takes the maximum among thebit widths of the TPMIs during single-stream transmission as the bitwidth of the TPMI corresponding to each of the remaining X-1 SRSresources.

When the scheduling information of each of the X SRS resourcescorresponding to the X groups of uplink scheduling information isjointly encoded in the DCI, the step in which the base stationdetermines the bit width of the X groups of uplink schedulinginformation in the DCI according to the number of antenna portscontained in SRS resources corresponding to the X groups of uplinkscheduling information includes:

the base station determines the total bit width of the TPMIs and/ortransmit layer indicators corresponding to all the SRS resources,according to the sum of possible values of the TPMI and the number oftransmission streams under the number of SRS ports contained in one ofthe X SRS resources and possible values of the TPMIs under the numbersof SRS ports contained in the remaining X-1 SRS resources; or

the base station determines the total bit width of the TPMIs and/ortransmit layer indicators corresponding to all the SRS resources,according to the maximum among possible values of the TPMI and thenumber of transmission streams under the number of SRS ports containedin one of the X SRS resources and possible values of the TPMIs under thenumbers of SRS ports contained in the remaining X-1 SRS resources; or

the base station determines the total bit width of the TPMIs and/ortransmit layer indicators corresponding to all the SRS resources,according to the possible values of the TPMI and the number oftransmission streams under the number of SRS ports contained in one ofthe X SRS resources and the possible values of the TPMIs under themaximum among the numbers of SRS ports contained in the remaining X-1SRS resources; or the base station determines the total bit width of theTPMIs and/or transmit layer indicators corresponding to all the SRSresources, according to the sum of possible values of the TPMI and thenumber of transmission streams under the number of SRS ports containedin one of the X SRS resources and possible values of the TPMIs under thenumbers of SRS ports contained in the remaining X-1 SRS resources underthe determined number of transmission streams; or

the base station determines the total bit width of the TPMIs and/ortransmit layer indicators corresponding to all the SRS resources,according to the maximum among possible values of the TPMI and thenumber of transmission streams under the number of SRS ports containedin one of the X SRS resources and possible values of the TPMIs under thenumbers of SRS ports contained in the remaining X-1 SRS resources underthe determined number of transmission streams; or

the base station determines the total bit width of the TPMIs and/ortransmit layer indicators corresponding to all the SRS resources,according to the possible values of the TPMI and the number oftransmission streams under the number of SRS ports contained in one ofthe X SRS resources and the possible values of the TPMIs under themaximum among the numbers of SRS ports contained in the remaining X-1SRS resources under the determined number of transmission streams; or

the base station determines the total bit width of the TPMIs and/ortransmit layer indicators corresponding to all the SRS resources,according to the possible values of the TPMI and the number oftransmission streams under the number of SRS ports contained in one ofthe X SRS resources and the possible values of the TPMIs duringsingle-stream transmission under the numbers of SRS ports contained inthe remaining X-1 SRS resources; or

the base station determines the total bit width of the TPMIs and/ortransmit layer indicators corresponding to all the SRS resources,according to the maximum among the possible values of the TPMI and thenumber of transmission streams under the number of SRS ports containedin one of the X SRS resources and the possible values of the TPMIsduring single-stream transmission under the numbers of SRS portscontained in the remaining X-1 SRS resources; or

the base station determines the total bit width of the TPMIs and/ortransmit layer indicators corresponding to all the SRS resources,according to the possible values of the TPMI and the number oftransmission streams under the number of SRS ports contained in one ofthe X SRS resources and the possible values of the TPMIs duringsingle-stream transmission under the maximum among the numbers of SRSports contained in the remaining X-1 SRS resources.

Correspondingly, the UE determines the bit width of the TPMI and TRI inthe same way, and decodes the TPMI and TRI in the corresponding decodingway to obtain the precoding matrix and the number of transmissionstreams corresponding to each antenna panel. According to the TPMI andTRI indicated by the uplink scheduling information as well as the SRSresources corresponding to the uplink scheduling information, the UEdetermines that the PUSCH corresponds to the precoding and the number oftransmission streams of the data stream corresponding to the uplinkscheduling information. The UE integrates all uplink schedulingindication information to determine the total precoding and transmissionstream of the PUSCH, and then performs the PUSCH transmission.

It should be noted that the TPMI and TRI in the above uplink schedulinginformation including the TPMI and TRI can be independently encoded orjointly encoded, which is not specifically limited in the embodiments ofthe present disclosure.

Further, in the codebook-based transmission mode, the base station mayalso send the SRS resource indication information to the UE afterreceiving the SRSs sent by the UE based on the instruction, where theSRS resource indication information indicates SRS resourcescorresponding to each of the X groups of uplink scheduling information.

(2) In the non-codebook-based transmission mode, the X groups of uplinkscheduling information include the SRI and/or transmit layer indicatorcorresponding to each group of SRS resources.

Specifically, X groups of SRS resources corresponding to the X groups ofuplink scheduling information may belong to X SRS resource sets, and theX groups of uplink scheduling information and the X SRS resource setshave a one-to-one correspondence.

In this case, the base station may determine the bit width of the Xgroups of uplink scheduling information in the DCI, according to thenumber of SRS resources included in the SRS resource sets correspondingto the X groups of uplink scheduling information. The specificimplementation may be: the base station determines the bit width of thej^(th) one of the X groups of uplink scheduling information in the DCI,according to the number of SRS resources contained in an SRS resourceset corresponding to the j^(th) group of uplink scheduling information,where j is an integer greater than or equal to 1 and less than or equalto X.

In specific implementation processes, the X groups of uplink schedulinginformation can indicate the SRI and/or transmit layer indicatorcorresponding to each SRS resource set in different ways. The specificindication ways include but not limited to the following three ways.

In a first way: the scheduling information of each of the X SRS resourcesets includes the SRI and/or transmit layer indicator of each SRSresource.

The scheduling information of each of the X SRS resource sets may beindependently encoded in the DCI or may be jointly encoded in the DCI,which is not specifically limited in the embodiments of the presentdisclosure.

When the scheduling information of each of the X SRS resource sets isindependently encoded in the DCI, the step in which the base stationdetermines the bit width of the X groups of uplink schedulinginformation in the DCI includes: the base station determines the bitwidth of the SRI and transmit layer indicator corresponding to one SRSresource set, according to the number of SRS resources included in theSRS resource set; or the base station determines the bit width of theSRI and transmit layer indicator corresponding to each SRS resource set,according to the maximum number of SRS resources included in all the SRSresource sets; or the base station determines the bit widths of the SRIand transmit layer indicator, each corresponding to the number of SRSresources contained in each X SRS resource set, according to the numbersof SRS resources included in all of the X SRS resource sets, and takesthe maximum value thereof as the bit width of the SRI and transmit layerindicator corresponding to each SRS resource set.

When the scheduling information of each of the X SRS resource sets isjointly encoded in the DCI, the step in which the base stationdetermines the bit width of the X groups of uplink schedulinginformation in the DCI includes:

the base station determines the total bit width of the SRIs and transmitlayer indicators corresponding to all the SRS resource sets, accordingto the numbers of SRS resources included in all the SRS resource sets;or the base station determines the total bit width of the SRIs andtransmit layer indicators corresponding to all the SRS resource sets,according to the maximum among the numbers of SRS resources included inall the SRS resource sets; or the base station determines the bit widthsof the SRIs and transmit layer indicators corresponding to all thenumbers of SRS resources, according to the number of SRS resourcesincluded in each of the X SRS resource sets, and takes the maximum valuethereof as the bit width of the SRI and transmit layer indicatorcorresponding to each SRS resource set. Correspondingly, the UEdetermines the bit width of the SRI and/or transmit layer indicator inthe same way, and decodes in the corresponding decoding way to obtainthe SRI and/or transmit layer indicator corresponding to each antennapanel.

In a second way: the scheduling information of each of the X SRSresource sets includes the SRI of each SRS resource.

The number of transmission streams of each antenna panel can beseparately indicated by the base station to the UE. For example, inaddition to X groups of scheduling information, the UL grant informationmay further include the independent transmission stream numberindication information, which may be determined by the base stationaccording to the SRSs sent by the UE, after the base station receivesand measures the SRSs sent by the UE based on the instruction. Thisinformation may indicate that all SRS resource sets correspond to thesame number of transmission streams.

In a specific implementation process, the scheduling information of eachof the X SRS resource sets may be independently encoded in the DCI ormay be jointly encoded in the DCI, which is not specifically limited inthe embodiments of the present disclosure.

When the scheduling information of each of the X SRS resource sets isindependently encoded in the DCI, the step in which the base stationdetermines the bit width of the X groups of uplink schedulinginformation in the DCI includes: the base station determines the bitwidth of the SRI corresponding to one SRS resource set, according to thenumber of SRS resources included in the SRS resource set; or the basestation determines the bit widths of the SRI, each corresponding to eachSRS resource set, according to the maximum number of SRS resourcesincluded in all the SRS resource sets; or the base station determinesthe bit widths of the SRI, each corresponding to the number of SRSresources included in each of X SRS resource sets, according to thenumber of SRS resources included in the each of the X SRS resource sets,and takes the maximum value thereof as the bit width of the SRIcorresponding to each SRS resource set.

When the scheduling information of each of the X SRS resource sets isjointly encoded in the DCI, the step in which the base stationdetermines the bit width of the X groups of uplink schedulinginformation in the DCI includes:

the base station determines the total bit width of the SRIscorresponding to all the SRS resource sets, according to the sum of thepossible values of the numbers of SRS resources included in all the SRSresource sets; or the base station determines the total bit width of theSRIs corresponding to all the SRS resource sets, according to themaximum among the possible values of the numbers of SRS resourcesincluded in all the SRS resource sets.

Correspondingly, the UE determines the bit width of the SRI in the sameway, and decodes in the corresponding decoding way to obtain the SRIcorresponding to each antenna panel.

In a third way: the scheduling information of one of the X SRS resourcesets includes the SRI and transmit layer indicator of the one SRSresource set, and the scheduling information of each of the remainingX-1 SRS resource sets includes the SRI of the each SRS resource set; andthe transmit layer indicator included in the scheduling information ofthe one SRS resource set indicates the number of transmission streams ofeach of the X SRS resource sets simultaneously.

In a specific implementation process, the scheduling information of eachof the X SRS resource sets may be independently encoded in the DCI ormay be jointly encoded in the DCI, which is not specifically limited inthe embodiments of the present disclosure.

When the scheduling information of each of the X SRS resource sets isindependently encoded in the DCI, the step in which the base stationdetermines the bit width of the X groups of uplink schedulinginformation in the DCI includes:

the base station determines the bit width of the SRI and transmit layerindicator of the one SRS resource set, according to the maximum amongthe numbers of SRS resources contained in all the SRS resource sets; andfor each of the remaining X-1 SRS resource sets, determines the bitwidth of the SRI corresponding to the SRS resource set, according to thenumber of SRS resources contained in the SRS resource set; or

the base station determines the bit width of the SRI and transmit layerindicator of the one SRS resource set, according to the number of SRSresources contained in the one SRS resource set; and for each of theremaining X-1 SRS resource sets, determines the bit width of the SRIcorresponding to the SRS resource set, according to the number of SRSresources contained in the SRS resource set; or

the base station determines the bit width of the SRI and transmit layerindicator of the one SRS resource set, according to the maximum amongthe numbers of SRS resources contained in all the SRS resource sets; andfor each of the remaining X-1 SRS resource sets, determines the bitwidth of the SRI corresponding to the SRS resource set, according to themaximum among the numbers of SRS resources contained in all the SRSresource sets; or

the base station determines the bit width of the SRI and transmit layerindicator of the one SRS resource set, according to the number of SRSresources contained in the one SRS resource set; and for each of theremaining X-1 SRS resource sets, determines the bit width of the SRIcorresponding to the SRS resource set, according to the maximum amongthe numbers of SRS resources contained in all the SRS resource sets; or

the base station determines the bit width of the SRI and transmit layerindicator of the one SRS resource set, according to the maximum amongthe numbers of SRS resources contained in all the SRS resource sets; andfor each of the remaining X-1 SRS resource sets, determines the bitwidth of the SRI corresponding to the SRS resource set, according to thenumber of SRS resources contained in the SRS resource set and the numberof transmission streams; or

the base station determines the bit width of the SRI and transmit layerindicator of the one SRS resource set according to the number of SRSresources contained in the one SRS resource set; and for each of theremaining X-1 SRS resource sets, determines the bit width of the SRIcorresponding to the SRS resource set according to the number of SRSresources and the number of transmission streams contained in the SRSresource set; or

the base station determines the bit width of the SRI and transmit layerindicator of the one SRS resource set, according to the maximum amongthe numbers of SRS resources contained in all the SRS resource sets; andfor each of the remaining X-1 SRS resource sets, determines the bitwidth of the SRI corresponding to the SRS resource set according to themaximum among the numbers of SRS resources contained in all the SRSresource sets and the number of transmission streams; or

the base station determines the bit width of the SRI and transmit layerindicator of the one SRS resource set, according to the number of SRSresources contained in the one SRS resource set; and for each of theremaining X-1 SRS resource sets, determines the bit width of the SRIcorresponding to the SRS resource set according to the maximum among thenumbers of SRS resources contained in all the SRS resource sets and thenumber of transmission streams; or

the base station determines the bit width of the SRI and transmit layerindicator of the one SRS resource set, according to the maximum amongthe numbers of SRS resources contained in all the SRS resource sets; andfor each of the remaining X-1 SRS resource sets, determines the bitwidths of the SRI each corresponding to the number of SRS resourcescontained in each of X SRS resource sets, according to the number of SRSresources contained in each of the X SRS resource sets, and takes themaximum value thereof as the bit width of the SRI corresponding to eachof the remaining X-1 SRS resource sets; or

the base station determines the bit width of the SRI and transmit layerindicator of the one SRS resource set, according to the number of SRSresources contained in the one SRS resource set; and for each of theremaining X-1 SRS resource sets, determines the bit widths of the SRI,each corresponding to the number of SRS resources of each of X SRSresource sets, according to the number of SRS resources contained ineach of the X SRS resource sets, and takes the maximum value thereof asthe bit width of the SRI corresponding to each of the remaining X-1 SRSresource sets; or

the base station determines the bit widths of the SRI and the bit widthsof the transmit layer indicator, each corresponding to the number of SRSresources contained in each of the X SRS resource sets, according to thenumber of SRS resources contained in each of the X SRS resource sets,takes the maximum among all the determined bit widths of the transmitlayer indicators as the bit width of the transmit layer indicator of theone SRS resource set, and takes the maximum among all the determined bitwidths of the SRIs as the bit width of the SRI corresponding to each ofthe X SRS resource sets; or

the base station determines the bit widths of the SRI, eachcorresponding to the number of SRS resources contained in each of the XSRS resource sets, as well as the jointly-encoded bit widths of the SRIand transmit layer indicator, each corresponding to the number of SRSresources contained in each of the X SRS resource sets, according to thenumber of SRS resources contained in each of the X SRS resource sets,takes the maximum among all the determined jointly-encoded bit widths ofthe SRIs and transmit layer indicators as the bit width of the transmitlayer indicator of the one SRS resource set, and takes the maximum amongall the determined bit widths of the SRIs as the bit width of the SRIcorresponding to each of the remaining X-1 SRS resource sets.

When the scheduling information of each of the X SRS resource sets isjointly encoded in the DCI, the step in which the base stationdetermines the bit width of the X groups of uplink schedulinginformation in the DCI includes:

the base station determines the total bit width of the SRIs and/ortransmit layer indicators corresponding to all the SRS resources,according to the sum of the number of SRS resources and the number oftransmission streams included in one of the X SRS resource sets, and thepossible values of the numbers of SRS ports included in the remainingX-1 SRS resource sets; or

the base station determines the total bit width of the SRIs and/ortransmit layer indicators corresponding to all the SRS resources,according to the maximum value among the number of SRS resources and thenumber of transmission streams included in one of the X SRS resourcesets, and the numbers of resources included in the remaining X-1 SRSresource sets.

Correspondingly, the UE determines the bit width of the SRI and/ortransmit layer indicator in the same way, and decodes in thecorresponding decoding way to obtain the SRI and/or transmit layerindicator corresponding to each antenna panel.

In this embodiment, multiple encoding implementations of uplinkscheduling information are proposed. For example, in the codebook-basedtransmission mode, the bit width of the X groups of uplink schedulinginformation in the DCI can be determined according to the number ofantenna ports included in the SRS resources, while in thenon-codebook-based transmission mode, the bit width of the X groups ofuplink scheduling information in the DCI can be determined according tothe number of SRS resources contained in the SRS resource sets. Thisembodiment further increases the flexibility of uplink scheduling andimproves the performance of uplink transmission of the UE.

Embodiments of the disclosure are applicable to the 5G NR system, andmay also be applicable to other wireless communication systems, e.g.,LTE system, evolution system of NR system, 6G system, etc., which arenot limited in the embodiments of the present disclosure. For example,in the subsequent evolution versions of LTE, various embodiments in theabove (1) may be used in the transmission mode TM9 or transmission modeTM10; for another example, in the subsequent versions of NR system, ifthe transmission mode of transmit diversity is introduced, then variousembodiments in the above (2) may also be used.

Based on the same inventive concept, an embodiment of the presentdisclosure further provides an uplink transmission apparatus, referringto FIG. 6, including:

a sending device 201 configured to instruct a UE to send SRSscorresponding to N groups of SRS resources, where each group of SRSresources includes one or more SRS resources, and N is a positiveinteger greater than 1;

a receiving device 202 configured to receive the SRSs sent by the UE;

a processing device 203 configured to determine X groups of uplinkscheduling information; where each group of uplink schedulinginformation corresponds to one of the N groups of SRS resources,different groups of uplink scheduling information correspond todifferent groups of SRS resources, and X is a positive integer greaterthan 1 and less than N, or X is a positive integer greater than 1 andequal to N;

the sending device 201 being further configured to send the X groups ofuplink scheduling information to the UE for the UE performing uplinksignal transmission according to the X groups of uplink schedulinginformation.

In one embodiment, one of the X groups of uplink scheduling informationcorresponds to one antenna panel of the UE.

In one embodiment, the SRSs are sent by the UE using a plurality ofantenna panels, where the SRSs are sent by the UE, using differentgroups of antenna panels, on different groups of SRS resources.

In one embodiment, the sending device 201 is further configured to:

send the correspondence information between the X groups of uplinkscheduling information and the N groups of SRS resources to the UE afterinstructing the UE to send the SRSs corresponding to the N groups of SRSresources.

In one embodiment, a signaling carrying the uplink schedulinginformation does not contain an SRS Resource Indicator (SRI) indicatingan SRS resource corresponding to uplink scheduling information.

In one embodiment, at least one of the X groups of uplink schedulinginformation contains indication information indicating that the at leastone group of uplink scheduling information is not used for the uplinksignal transmission.

In one embodiment, the device is further configured to:

agree on the value of X with the UE before determining the X groups ofuplink scheduling information.

In one embodiment, the sending device 201 is further configured to:

send the resource set indication information to the UE after thereceiving device 202 receives the SRSs sent by the UE, where the SRSresource set indication information indicates SRS resource setscorresponding to the X groups of uplink scheduling information.

In one embodiment, the X groups of uplink scheduling information includeone or more relative relationships among some of the X groups of uplinkscheduling information, or include one or more relative relationshipsamong all of the X groups of uplink scheduling information; and arelative relationship comprises phase rotation and/or amplitude scaling.

In one embodiment, each group of uplink scheduling information includesa Transmit Precoding Metrix Indicator (TPMI), of an SRS resourcecorresponding to the each group of uplink scheduling information, and/ora transmit layer indicator, of an SRS resource corresponding to the eachgroup of uplink scheduling information.

In one embodiment, different groups of uplink scheduling informationindicate an equal number of transmission streams.

In one embodiment, the sending device 201 is further configured to:

send the SRS resource indication information to the UE after thereceiving device 202 receives the SRSs sent by the UE, where the SRSresource indication information indicates one or more SRS resourcescorresponding to each group of uplink scheduling information.

In one embodiment, the sending device 201 is configured to:

determine the bit width of the X groups of uplink scheduling informationin DCI according to the number of antenna ports contained in SRSresources corresponding to the X groups of uplink schedulinginformation, generate the DCI, and send the X groups of uplinkscheduling information to the UE through the DCI.

In one embodiment, the sending device 201 is configured to:

determining, by the base station, a bit width of a k^(th) one of the Xgroups of uplink scheduling information in the DCI, according to aquantity of antenna ports of SRS resources in the group of SRS resourcescorresponding to the kt^(h) group of uplink scheduling information,where k is an integer greater than or equal to 1 and less than or equalto X.

In one embodiment, the X groups of uplink scheduling information arecontained in X SRS resource sets of the N groups of SRS resources, andeach group of the X groups of uplink scheduling information is containedin each SRS resource set.

In one embodiment, each of the X groups of uplink scheduling informationincludes an SRS Resource Indicator (SRI) of an SRS resource in an SRSresource set corresponding to the each group of uplink schedulinginformation, and/or a transmit layer indicator of an SRS resource in anSRS resource set corresponding to the each group of uplink schedulinginformation.

In one embodiment, the sending device 201 is configured to:

determine the bit width of the X groups of uplink scheduling informationin DCI according to the number of SRS resources contained in SRSresource sets corresponding to the X groups of uplink schedulinginformation, generate the DCI, and send the X groups of uplinkscheduling information to the UE through the DCI.

In one embodiment, the sending device 201 is configured to:

determine a bit width of a j^(th) one of the X groups of uplinkscheduling information in the DCI, according to a quantity of SRSresources in an SRS resource set corresponding to the j^(th) group ofuplink scheduling information, and j is an integer greater than or equalto 1 and less than or equal to X.

For the specific implementations of the operations performed by theabove devices, the reference may be made to the specific implementationsof the corresponding steps performed by the base station in the aboveuplink transmission method of the embodiments of the present disclosure,which will not be repeated in the embodiment of the disclosure.

Based on the same inventive concept, an embodiment of the presentdisclosure further provides an uplink transmission apparatus, referringto FIG. 7, including:

a receiving device 301 configured to receive a message sent by a basestation for instructing the apparatus to send SRSs corresponding to Ngroups of SRS resources, where each group of SRS resources includes oneor more SRS resources, and N is a positive integer greater than 1;

a sending device 302 configured to send the SRSs corresponding to the Ngroups of SRS resources;

the receiving device 301 being further configured to: receive X groupsof uplink scheduling information sent by the base station;

a processing device 303 configured to perform uplink signal transmissionaccording to the X groups of uplink scheduling information; where eachgroup of uplink scheduling information corresponds to one of the Ngroups of SRS resources, different groups of uplink schedulinginformation correspond to different groups of SRS resources, and X is apositive integer greater than 1 and not greater than N.

In one embodiment, one of the X groups of uplink scheduling informationcorresponds to one antenna panel of the apparatus.

In one embodiment, the sending device 302 is configured to:

send the SRSs corresponding to the N groups of SRS resources by using aplurality of antenna panels, and the sending device 302 uses differentgroups of antenna panels to send SRSs on different groups of SRSresources.

In one embodiment, the receiving device 301 is further configured to:

receive the correspondence information between the X groups of uplinkscheduling information and the N groups of SRS resources sent by thebase station after receiving the message sent by the base station forinstructing the apparatus to send the SRSs corresponding to the N groupsof SRS resources.

In one embodiment, a signaling carrying the uplink schedulinginformation does not contain an SRS Resource Indicator (SRI) indicatingan SRS resource corresponding to X groups of the uplink schedulinginformation.

In one embodiment, at least one of the X groups of uplink schedulinginformation contains indication information indicating that the at leastone group of uplink scheduling information is not used for the uplinksignal transmission.

In one embodiment, the processing device 303 is further configured to:

agree on the value of X with the base station before the receivingdevice 301 receives the X groups of uplink scheduling information sentby the base station.

In one embodiment, the receiving device 301 is further configured to:

receive the SRS resource set indication information sent by the basestation after the sending device 302 sends the SRSs corresponding to theN groups of SRS resources, where the SRS resource set indicationinformation indicates SRS resource sets corresponding to the X groups ofuplink scheduling information.

In one embodiment, the X groups of uplink scheduling information includeone or more relative relationships among some of the X groups of uplinkscheduling information, or include one or more relative relationshipsamong all of the X groups of uplink scheduling information; where arelative relationship comprises phase rotation and/or amplitude scaling.

In one embodiment, each group of uplink scheduling information includesa Transmit Precoding Metrix Indicator (TPMI), of an SRS resourcecorresponding to the each group of uplink scheduling information, and/ora transmit layer indicator, of an SRS resource corresponding to the eachgroup of uplink scheduling information.

In one embodiment, different groups of uplink scheduling informationindicate an equal number of transmission streams.

In one embodiment, the receiving device 301 is further configured to:

receive the SRS resource indication information sent by the base stationafter the sending device 302 sends the SRSs corresponding to the Ngroups of SRS resources, where the SRS resource indication informationindicates one or more SRS resources corresponding to each group ofuplink scheduling information.

In one embodiment, the receiving device 301 is further configured to:

receive X groups of uplink scheduling information sent by the basestation, which includes:

receive the DCI sent by the base station, and obtain the X groups ofuplink scheduling information from the DCI;

the processing device 303 is configured to: determine the bit width ofthe X groups of uplink scheduling information in the DCI according tothe number of antenna ports contained in SRS resources corresponding tothe X groups of uplink scheduling information; and decode the DCIaccording to the bit width of the X groups of uplink schedulinginformation in the DCI to obtain the X groups of uplink schedulinginformation.

In one embodiment, the processing device 303 is configured to:

determine a bit width of a k^(th) one of the X groups of uplinkscheduling information in the DCI, according to a quantity of antennaports of SRS resources in the group of SRS resources corresponding tothe k^(th) group of uplink scheduling information, and k is an integergreater than or equal to 1 and less than or equal to X.

In one embodiment, the X groups of uplink scheduling information arecontained in X SRS resource sets of the N groups of SRS resources, andeach group of the X groups of uplink scheduling information is containedin each SRS resource set.

In one embodiment, each group of uplink scheduling information includes:an SRS Resource Indicator (SRI) of an SRS resource in an SRS resourceset corresponding to the each group of uplink scheduling information,and/or a transmit layer indicator of an SRS resource in an SRS resourceset corresponding to the each group of uplink scheduling information.

In one embodiment, the receiving device 301 is further configured to:

receive X groups of uplink scheduling information sent by the basestation, which specifically includes:

receive the DCI sent by the base station, and obtain the X groups ofuplink scheduling information from the DCI;

the processing device 303 is configured to: determine the bit width ofthe X groups of uplink scheduling information in the DCI according tothe number of SRS resources contained in SRS resource sets correspondingto the X groups of uplink scheduling information; and decode the DCIaccording to the bit width of the X groups of uplink schedulinginformation in the DCI to obtain the X groups of uplink schedulinginformation.

In one embodiment, the processing device 303 is configured to:

determine the bit width of the j^(th) one of the X groups of uplinkscheduling information in DCI according to the number of SRS resourcesin an SRS resource set corresponding to the j^(th) group of uplinkscheduling information, where j is an integer greater than or equal to 1and less than or equal to X.

For the specific implementations of the operations performed by theabove devices, the reference may be made to the specific implementationsof the corresponding steps performed by the UE in the above uplinktransmission method of the embodiments of the present disclosure, whichwill not be repeated in the embodiment of the disclosure.

Based on the same inventive concept, an embodiment of the presentdisclosure further provides an uplink transmission device. Referring toFIG. 8, it includes:

at least one processor 401, and

a memory 402 and a communication interface 403 communicatively connectedto the at least one processor 401;

and the memory 402 stores instructions that can be executed by the atleast one processor 401, and the at least one processor 401 performs anyone of the above methods of the embodiments of the present disclosurevia the communication interface 403 by executing the instructions storedin the memory 402.

Based on the same inventive concept, an embodiment of the presentdisclosure further provides a computer readable storage medium storingthe computer instructions, which cause a computer to perform the abovemethods of the embodiments of the present disclosure when running on thecomputer.

Embodiments of the disclosure can provide methods, systems and computerprogram products. Thus the disclosure can take the form of hardwareembodiments alone, software embodiments alone, or embodiments combiningthe software and hardware aspects. Also the disclosure can take the formof computer program products implemented on one or more computer usablestorage mediums (including but not limited to magnetic disk memories,CD-ROMs, optical memories and the like) containing computer usableprogram codes therein.

The disclosure is described by reference to the flow charts and/or theblock diagrams of the methods, the devices (systems) and the computerprogram products according to the embodiments of the disclosure. Itshould be understood that each process and/or block in the flow chartsand/or the block diagrams, and a combination of processes and/or blocksin the flow charts and/or the block diagrams can be implemented by thecomputer program instructions. These computer program instructions canbe provided to a general-purpose computer, a dedicated computer, anembedded processor, or a processor of another programmable dataprocessing device to produce a machine, so that an apparatus forimplementing the functions specified in one or more processes of theflow charts and/or one or more blocks of the block diagrams is producedby the instructions executed by the computer or the processor of anotherprogrammable data processing device.

These computer program instructions can also be stored in a computerreadable memory which is capable of guiding the computer or anotherprogrammable data processing device to operate in a particular way, sothat the instructions stored in the computer readable memory produce amanufacture including the instruction apparatus which implements thefunctions specified in one or more processes of the flow charts and/orone or more blocks of the block diagrams.

These computer program instructions can also be loaded onto the computeror another programmable data processing device, so that a series ofoperation steps are performed on the computer or another programmabledevice to produce the computer-implemented processing. Thus theinstructions executed on the computer or another programmable deviceprovide steps for implementing the functions specified in one or moreprocesses of the flow charts and/or one or more blocks of the blockdiagrams.

1. An uplink transmission method, comprising: instructing, by a basestation, a User Equipment (UE) to send Sounding Reference Signals (SRSs)corresponding to N groups of SRS resources, wherein each group of SRSresources comprises one or more SRS resources, and N is a positiveinteger greater than 1; receiving, by the base station, the SRSs sent bythe UE; determining, by the base station, X groups of uplink schedulinginformation; wherein each group of uplink scheduling informationcorresponds to one of the N groups of SRS resources, different groups ofuplink scheduling information correspond to different groups of SRSresources in the N groups of SRS resources, and X is a positive integergreater than land less than N, or X is a positive integer greater than 1and equal to N; and sending, by the base station, the X groups of uplinkscheduling information to the UE for the UE performing uplink signaltransmission according to the X groups of uplink scheduling information.2. The method of claim 1, wherein: one of the X groups of uplinkscheduling information corresponds to one antenna panel of the UE;and/or the SRSs are sent by the UE using a plurality of antenna panels,wherein the SRSs are sent by the UE, using different groups of antennapanels, on different groups of SRS resources; and/or the X groups ofuplink scheduling information comprise one or more relativerelationships among some of the X groups of uplink schedulinginformation, or comprise one or more relative relationships among all ofthe X groups of uplink scheduling information; wherein a relativerelationship comprises phase rotation and/or amplitude scaling; and/orthe X groups of uplink scheduling information are contained in X SRSresource sets of the N groups of SRS resources, wherein each group ofthe X groups of uplink scheduling information is contained in each SRSresource set.
 3. (canceled)
 4. The method of claim 1, furthercomprising: sending, by the base station, correspondence informationbetween the X groups of uplink scheduling information and the N groupsof SRS resources to the UE.
 5. The method of claim 1, wherein: the Xgroups of uplink scheduling information is carried in a signaling, andthe signaling does not contain an SRS Resource Indicator (SRI)indicating an SRS resource corresponding to uplink schedulinginformation; and/or each group of uplink scheduling informationcomprises: a Transmit Precoding Metrix Indicator (TPMI), of an SRSresource corresponding to the each group of uplink schedulinginformation; and/or each group of uplink scheduling informationcomprises: a transmit layer indicator, of an SRS resource correspondingto the each group of uplink scheduling information.
 6. The method ofclaim 1, wherein at least one of the X groups of uplink schedulinginformation contains indication information indicating that the at leastone group of uplink scheduling information is not used for the uplinksignal transmission.
 7. (canceled)
 8. The method of claim 1, wherein,after the base station receives the SRSs sent by the UE, the methodfurther comprises: sending, by the base station, SRS resource setindication information to the UE, wherein the SRS resource setindication information indicates SRS resource sets corresponding to theX groups of uplink scheduling information. 9-10. (canceled)
 11. Themethod of claim 5, wherein one or a combination of following schemes isperformed: scheme I: each group of uplink scheduling informationcomprises: a Transmit Precoding Metrix Indicator (TPMI), of an SRSresource corresponding to the each group of uplink schedulinginformation, and different groups of uplink scheduling informationindicate an equal number of transmission streams; scheme II: each groupof uplink scheduling information comprises: a transmit layer indicator,of an SRS resource corresponding to the each group of uplink schedulinginformation, and different groups of uplink scheduling informationindicate an equal number of transmission streams; scheme III: each groupof uplink scheduling information comprises: a Transmit Precoding MetrixIndicator (TPMI), of an SRS resource corresponding to the each group ofuplink scheduling information, and after the base station receives theSRSs sent by the UE, the method further comprises: sending, by the basestation, SRS resource indication information to the UE, wherein the SRSresource indication information indicates one or more SRS resourcescorresponding to each group of uplink scheduling information; scheme IV:each group of uplink scheduling information comprises: a transmit layerindicator, of an SRS resource corresponding to the each group of uplinkscheduling information, and after the base station receives the SRSssent by the UE, the method further comprises: sending, by the basestation, SRS resource indication information to the UE, wherein the SRSresource indication information indicates one or more SRS resourcescorresponding to each group of uplink scheduling information; scheme V:each group of uplink scheduling information comprises: a TransmitPrecoding Metrix Indicator (TPMI), of an SRS resource corresponding tothe each group of uplink scheduling information, and the sending, by thebase station, the X groups of uplink scheduling information to the UE,comprises: determining, by the base station, a bit width of the X groupsof uplink scheduling information in Downlink Control Information (DCI),according to a quantity of antenna ports contained in SRS resourcescorresponding to the X groups of uplink scheduling information,generating, by the base station, the DCI, and sending, by the basestation, the X groups of uplink scheduling information to the UE throughthe DCI; scheme VI: each group of uplink scheduling informationcomprises: a transmit layer indicator, of an SRS resource correspondingto the each group of uplink scheduling information, and the sending, bythe base station, the X groups of uplink scheduling information to theUE, comprises: determining, by the base station, a bit width of the Xgroups of uplink scheduling information in Downlink Control Information(DCI), according to a quantity of antenna ports contained in SRSresources corresponding to the X groups of uplink schedulinginformation, generating, by the base station, the DCI, and sending, bythe base station, the X groups of uplink scheduling information to theUE through the DCI. 12-15. (canceled)
 16. The method of claim 2,wherein: each group of uplink scheduling information comprises: an SRSResource Indicator (SRI) of an SRS resource in an SRS resource setcorresponding to the each group of uplink scheduling information, and/oreach group of uplink scheduling information comprises: a transmit layerindicator of an SRS resource in an SRS resource set corresponding to theeach group of uplink scheduling information; and/or wherein the sending,by the base station, the X groups of uplink scheduling information tothe UE, comprises: determining, by the base station, a bit width of theX groups of uplink scheduling information in Downlink ControlInformation (DCI), according to a quantity of SRS resources contained inSRS resource sets corresponding to the X groups of uplink schedulinginformation, generating the DCI, and sending, by the base station, the Xgroups of uplink scheduling information to the UE through the DCI.17-18. (canceled)
 19. An uplink transmission method, comprising:receiving, by a UE, a message sent by a base station for instructing theUE to send Sounding Reference Signals (SRSs) corresponding to N groupsof SRS resources, wherein each group of SRS resources comprises one ormore SRS resources, and N is a positive integer greater than 1; sending,by the UE, the SRSs; receiving, by the UE, X groups of uplink schedulinginformation sent by the base station; wherein each group of uplinkscheduling information corresponds to one of the N groups of SRSresources, different groups of uplink scheduling information correspondto different groups of SRS resources in the N groups of SRS resources,and X is a positive integer greater than 1 and less than 1, or X is apositive integer greater than 1 and equal to N; and performing, by theUE, uplink signal transmission according to the X groups of uplinkscheduling information.
 20. The method of claim 19, wherein: one of theX groups of uplink scheduling information corresponds to one antennapanel of the UE; and/or sending, by the UE, the SRSs corresponding tothe N groups of SRS resources by using a plurality of antenna panels,wherein the UE uses different groups of antenna panels to send the SRSson different groups of SRS resources; and/or the X groups of uplinkscheduling information comprise one or more relative relationships amongsome of the X groups of uplink scheduling information, or comprise oneor more relative relationships among all of the X groups of uplinkscheduling information; wherein a relative relationship comprises phaserotation and/or amplitude scaling; and/or the X groups of uplinkscheduling information are contained in X SRS resource sets of the Ngroups of SRS resources, wherein each group of the X groups of uplinkscheduling information is contained in each SRS resource set. 21.(canceled)
 22. The method of claim 19, comprising: receiving, by the UE,correspondence information sent by the base station, between the Xgroups of uplink scheduling information and the N groups of SRSresources.
 23. The method of claim 19, wherein: the X groups of uplinkscheduling information is carried in a signaling, and the signaling doesnot contain an SRS Resource Indicator (SRI) indicating an SRS resourcecorresponding to X groups of the uplink scheduling information; and/oreach group of uplink scheduling information comprises: a TransmitPrecoding Metrix Indicator (TPMI), of an SRS resource corresponding tothe each group of uplink scheduling information; and/or each group ofuplink scheduling information comprises: a transmit layer indicator, ofan SRS resource corresponding to the each group of uplink schedulinginformation.
 24. The method of claim 19, wherein at least one of the Xgroups of uplink scheduling information contains indication informationindicating that the at least one group of uplink scheduling informationis not used for the uplink signal transmission.
 25. (canceled)
 26. Themethod of claim 19, wherein, after the UE sends the SRSs correspondingto the N groups of SRS resources, the method further comprises:receiving, by the UE, SRS resource set indication information sent bythe base station, wherein the SRS resource set indication informationindicates SRS resource sets corresponding to the X groups of uplinkscheduling information. 27-28. (canceled)
 29. The method of claim 23,wherein one or a combination of following schemes is performed: schemeI: each group of uplink scheduling information comprises: a TransmitPrecoding Metrix Indicator (TPMI), of an SRS resource corresponding tothe each group of uplink scheduling information, and different groups ofuplink scheduling information indicate an equal number of transmissionstreams; scheme II: each group of uplink scheduling informationcomprises: a transmit layer indicator, of an SRS resource correspondingto the each group of uplink scheduling information, and different groupsof uplink scheduling information indicate an equal number oftransmission streams; scheme III: each group of uplink schedulinginformation comprises: a Transmit Precoding Metrix Indicator (TPMI), ofan SRS resource corresponding to the each group of uplink schedulinginformation, and after the UE sends the SRSs corresponding to the Ngroups of SRS resources, the method further comprises: receiving, by theUE, SRS resource indication information sent by the base station,wherein the SRS resource indication information indicates one or moreSRS resources corresponding to each group of uplink schedulinginformation; scheme IV: each group of uplink scheduling informationcomprises: a transmit layer indicator, of an SRS resource correspondingto the each group of uplink scheduling information, and after the UEsends the SRSs corresponding to the N groups of SRS resources, themethod further comprises: receiving, by the UE, SRS resource indicationinformation sent by the base station, wherein the SRS resourceindication information indicates one or more SRS resources correspondingto each group of uplink scheduling information; scheme V: each group ofuplink scheduling information comprises: a Transmit Precoding MetrixIndicator (TPMI), of an SRS resource corresponding to the each group ofuplink scheduling information, and the receiving, by the UE, the Xgroups of uplink scheduling information sent by the base station,comprises: receiving, by the UE, Downlink Control Information (DCI) sentby the base station, and obtaining the X groups of uplink schedulinginformation from the DCI; and the receiving, by the UE, the DCI sent bythe base station, and obtaining the X groups of uplink schedulinginformation from the DCI, comprises: determining, by the UE, a bit widthof the X groups of uplink scheduling information in the DCI according toa quantity of antenna ports contained in SRS resources corresponding tothe X groups of uplink scheduling information; and decoding, by the UE,the DCI according to the bit width of the X groups of uplink schedulinginformation in the DCI to obtain the X groups of uplink schedulinginformation; scheme VI: each group of uplink scheduling informationcomprises: a transmit layer indicator, of an SRS resource correspondingto the each group of uplink scheduling information, and the receiving,by the UE, the X groups of uplink scheduling information sent by thebase station, comprises: receiving, by the UE, Downlink ControlInformation (DCI) sent by the base station, and obtaining the X groupsof uplink scheduling information from the DCI; and the receiving, by theUE, the DCI sent by the base station, and obtaining the X groups ofuplink scheduling information from the DCI, comprises: determining, bythe UE, a bit width of the X groups of uplink scheduling information inthe DCI according to a quantity of antenna ports contained in SRSresources corresponding to the X groups of uplink schedulinginformation; and decoding, by the UE, the DCI according to the bit widthof the X groups of uplink scheduling information in the DCI to obtainthe X groups of uplink scheduling information. 30-33. (canceled)
 34. Themethod of claim 20, wherein: each group of uplink scheduling informationcomprises: an SRS Resource Indicator (SRI) of an SRS resource in an SRSresource set corresponding to the each group of uplink schedulinginformation, and/or each group of uplink scheduling informationcomprises: a transmit layer indicator of an SRS resource in an SRSresource set corresponding to the each group of uplink schedulinginformation; and/or the receiving, by the UE, the X groups of uplinkscheduling information sent by the base station, comprises: receiving,by the UE, DCI sent by the base station, and obtaining the X groups ofuplink scheduling information from the DCI; and the receiving, by theUE, DCI sent by the base station, and obtaining the X groups of uplinkscheduling information from the DCI, comprises: determining, by the UE,a bit width of the X groups of uplink scheduling information in the DCIaccording to a quantity of SRS resources contained in SRS resource setscorresponding to the X groups of uplink scheduling information; anddecoding, by the UE, the DCI according to the bit width of the X groupsof uplink scheduling information in the DCI to obtain the X groups ofuplink scheduling information. 35-42. (canceled)
 43. An uplinktransmission device, comprising: at least one processor, and a memoryand a communication interface communicatively connected to the at leastone processor; wherein the memory stores instructions executed by the atleast one processor, and the at least one processor performs the methodof claim 1 via the communication interface by executing the instructionsstored in the memory.
 44. (canceled)
 45. An uplink transmission device,comprising: at least one processor, and a memory and a communicationinterface communicatively connected to the at least one processor;wherein the memory stores instructions executed by the at least oneprocessor, and the at least one processor performs the method of claim19 via the communication interface by executing the instructions storedin the memory.
 46. The method of claim 5, wherein the X groups of uplinkscheduling information indicates the TPMI and/or the transmit layerindicator corresponding to each group of SRS resources by: differentgroups of uplink scheduling information in the X groups of uplinkscheduling information corresponding to different SRS resources, andscheduling information for each of X SRS resources containing a TPMI andtransmit layer indicator of the each of the X SRS resources; ordifferent groups of uplink scheduling information in the X groups ofuplink scheduling information corresponding to different SRS resources,and scheduling information for each of X SRS resources containing a TPMIof the each of the X SRS resources; or different groups of uplinkscheduling information in the X groups of uplink scheduling informationcorresponding to different SRS resources, and scheduling information forone of X SRS resources, containing a TPMI and transmit layer indicatorof the one SRS resource, and scheduling information for each ofremaining X-1 SRS resources containing a TPMI of the each of remainingX-1 SRS resources; wherein the transmit layer indicator contained in thescheduling information for the one SRS resource indicates a quantity oftransmission streams of each of the X SRS resources.
 47. The method ofclaim 23, wherein the X groups of uplink scheduling informationindicates the TPMI and/or the transmit layer indicator corresponding toeach group of SRS resources by: different groups of uplink schedulinginformation in the X groups of uplink scheduling informationcorresponding to different SRS resources, and scheduling information foreach of X SRS resources containing a TPMI and transmit layer indicatorof the each of the X SRS resources; or different groups of uplinkscheduling information in the X groups of uplink scheduling informationcorresponding to different SRS resources, and scheduling information foreach of X SRS resources containing a TPMI of the each of the X SRSresources; or different groups of uplink scheduling information in the Xgroups of uplink scheduling information corresponding to different SRSresources, and scheduling information for one of X SRS resources,containing a TPMI and transmit layer indicator of the one SRS resource,and scheduling information for each of remaining X-1 SRS resourcescontaining a TPMI of the each of remaining X-1 SRS resources; whereinthe transmit layer indicator contained in the scheduling information forthe one SRS resource indicates a quantity of transmission streams ofeach of the X SRS resources.